Animal experimentation and experiments on humans

 It's widely accepted that whether medical experiments on animals - not any particular experiment, but the institution at large - is morally justified, completely hinges on whether non-human animals have the same moral status as humans. It's widely believed that if the animal rights people were right, it would follow that animal experimentation would be unjustified. But if the common view on which much of legislation and common-sense morality rest (in my own Sweden and many other countries) is correct - that is, if the moral status of non-human animals is substantial but far less than that of humans - animal experimentation is easily morally justified. We may quibble about particular experiments, but by and large, the benefits for mankind outweighs all the animal suffering. 

Sometimes animal experimentation is argued for by the ridiculously bad argument that scientists who do animal experiments aren't evil, and wouldn't harm animals unless it was absolutely necessary. But of course the disjunction "either scientists are evil, or all their choices are morally optimal" is false. I know very well that scientists who do animal experiments tend to think that what they're doing is necessary and for the best. But just like everyone else, scientists may be morally mistaken.
Sometimes animal experimentation is argued for by the likewise ridiculously bad argument that everyone would want to save their child rather than a rat in an emergency - say, the old philosophy favourite of a burning house, and you only have time to rescue one of the living beings trapped inside before the whole thing collapses. Well, I for one would also want to save my child if I had one - or any child, really - rather than, say, Niklas "Hagamannen" Lindgren from that same burning building (for all you non-Swedes, he committed a series of brutal rapes in the late 1990s/early 00s). I wouldn't flip a coin, I'd try to save the child without a second thought. But I'm not thereby, on pain of inconsistency, forced to embrace the idea of non-consensual harmful medical experiments on convicts. I believe that even Niklas Lindgren, as horrible as he is, should have his basic human rights respected. Non-consensual harmful medical experiments is a completely different beast to "who would you save out of a burning building, if you could only save one?"

Thus, both these pro-vivisection arguments are ridiculously bad. Moreover:

1. LaFolette and Shanks' classic paper - the moral calculation just doesn't check out, even if we accept that non-human animals have far lower moral status than humans

It is widely accepted that animal experiments are easily morally justified on the assumption that animals have lower moral status than humans, despite this decades-old paper by LaFolette and Shanks. Their argument in the paper goes roughly like this: People defend animal experimentation by consequentialist arguments. They argue that since non-human animals have less worth than humans, and their suffering subsequently matters less, then

(animal suffering)<(human health benefits)

- thus, moral justification. But actually, even if we accept the premise that animals have lower moral status, so that, say, a hundred pain units as experienced by mice can be outweighed by only one health benefit unit as experienced by a human being, the calculation is much more complicated than that, and unlikely to check out.

First, on any consequentialist calculation, numbers matter. We have to factor in the enormous number of suffering lab animals.

Also, on any consequentialist calculation - heck, on standard decision-theory! on simple common sense! - probabilities matter. When we harm animals in a medical expeirment, their suffering is certain, but whether humans will benefit from this or that research program is always very uncertain. If we look at heavily funded medical research areas like cancer and Alzeimers, the success rates are abysmal. About 97% of all new cancer drugs that look promising on the animal experimentation stage, and 99% of all new Alzeimer drugs, fail to reach the market for human patients. (There's tons written about the "translation problem" - most of it not from opponents to animal experimentation, who usually focus more on animal rights arguments, but from a general scientific standpoint. Even if you wouldn't give a fuck about animals, this is obviously a big problem.)
Actually, since humans so often react differently to drugs than non-human animals do, it's highly likely that some drugs that were abandoned before going to human trials - because they were harmful for or at least not helpful for the lab animals -  would have been great for human patients.

Moreover, in all other areas of the law and common-sense morality, we treat the distinction between action and omission as extremely important - even more important than the animal-human distinction. We have laws against wanton animal cruelty, but there are no laws against not benefitting random strangers. Even jurisdictions that have "duty to assist" laws only require that people do something - like call the police or an ambulance - when they witness an immediate emergency. No one is legally required to do things that benefit unidentified strangers in the future, such as give money to or work for charity programs. But animal experimentation is all about intentionally harming animals in order to maybe, possibly, benefit unidentified strangers in the future. 

What we have here isn't (animal suffering) vs (human health benefits). It's 

(animal suffering)X(huge number)X(100%certainty)X(the moral seriousness of acting)
vs
(human health benefits)X(some much lower number)X(some low probability)X(the lower moral seriousness of omission)

- it's just highly implausible that the calculation checks out - i.e., that multiplying everything on the animal side will yield a lower total score than when we multiply everything on the human side - even if we accept the premise that animals have much lower moral status than humans. 

2. The alternative timeline

 In addition to the above, it's a mistake to look at all the medicines and medical procedures we have and declare that we would have none of them without animal experiments. It's a huge mistake to say that we would have been stuck with early twentieth century medicine still, if early twentieth century protests against animal experiments had succeeded in getting these practices banned. 

Compare: In the early twentieth century, there were both electric cars and fossile-fuel cars around. For various reasons, car manufacturers then went with fossile-fuel cars. The developtment of electric cars got stalled, and didn't pick up again until we got a serious debate about fossile fuels and the greenhouse effect.
Suppose someone had said, twenty years ago: "Okay, fossile fuels are bad for the climate. Still though, I'm happy that car manufactorers put all these resources into developing good petrol cars. Otherwise, we would be stuck with electric cars only, and they are so crap! There are so few of them for starters, extremely difficult to even buy one if you want to. There's almost nowhere you can charge them, and you can only drive them for very very short distances before you need to recharge. So I'm really glad we have fossile fuel cars to drive!"
That person would be seriously confused, because if car manufacturers had gone all in with electric cars in the early twentieth century, clearly those would have been pretty good at the turn of the millenium. We don't know how good, exactly, but much better in this alternative timeline than they were in the real world. 

Although we don't know what the state of medicine would be in the alternative scenario in which animal experimentation got banned in the early twentieth century, we can be pretty certain advances would still have been made. Scientists and doctors wouldn't just have shrugged and given up completely because they couldn't experiment on animals. 

Moreover, this makes the above calculation even more complicated. On the human benefit side, we should actually put only those human benefits that we couldn't get by any other method. Now, someone might say that no one would do animal experiments if there was any other way, so this is a moot point - but see above. Just because scientists aren't evil and relish in tormenting animals, this doesn't mean that they make optimal choices all the time. All researchers in all fields have a tendency to continue using established methods which aren't necessarily perfect.

 3. Animal experiments to save poor marginalized humans?

Some people argue that we should have animal experiments because otherwise, medical scientists will surely torment poor marginalized humans instead. Sometimes people then proceed to list Doctor Mengele's concentration camp experiments, the Tuskagee syphilis study, or, in a Swedish context, the Vipeholm dental health study. However, none of these terrible experiments or studies took place because animal experiments had been banned. These researchers didn't reluctantly harm humans because they couldn't harm animals - on the contrary, animal experiments were less regulated back then than they are now. 

Researchers have experimented on disabled and otherewise oppressed and marginalized humans either for purely sadistic reasons, or because they can get human data that way. As I pointed out above, very little of what works for lab animals end up working for humans. 

Rules and legislation for animal experimentation explicitly embraces the view that it is morally right to harm and kill those who have lower moral status if there's some chance that doing so might benefit those with higher moral status. This isn't supposed to threaten disabled and marginalized people, because we're supposed to have the same moral status as all other humans, all humans are supposed to be equal. 

HOWEVER.

Disability activists have seriously questioned whether this really is the case. For instance, psychology professor Dick Sobsey wrote this important article on the murder of Tracy Latimer, who was killed by her own father. He shut her in the family car, started the engine and lead the exhaust fumes in to her until she died. The father initially tried to get away with the murder, changed his story multiple times, but eventually claimed that he had carbon-monoxide-poisoned Tracy for her own good, because she had cerebral palsy and suffered so. Despite the fact that even his final story contained many claims that were weird from a purely medical perspective about Tracy’s condition and her suffering, both mainstream media and famous philosophy professor James Rachels bought his story wholesale, and considered it outrageous that he was sentenced to prison when he only wanted what was best for his daughter.
This is nothing unique when it comes to murders of disabled people, which Sobsey discusses further in the article. It's often assumed that the murder was for the best, that the murderer tells the truth when he calls it a "mercy killing", even if there's no other evidence whatsoever that the victim wanted to die.
There are several cases of disabled patients in countries with legalized active euthanasia who testify that clinicians have tried to pressure them into choosing death, like CanadianRoger Foley. Movies, TV shows and books frequently portray disabled people's death as bittersweet rather than wholly tragic - so sad, but they're finally free of their terrible existence! And there are many, many blogs and social media accounts which collect anecdotes from disabled people, or parents of disabled people, who's heard the most terrible comments from others who may not perceive themselves as hateful at all, but rather as compassionate and well-meaning. 

And then, of course, we have the philosophers. James Rachels argued in a textbook used by millions of students worldwide that the killing of Tracy Latimer was morally right, we can see this if only we think rationally about the matter and don't get too emotional. Peter Singer argues that non-human animals and disabled people live worse lives than normal people do, that it may be right to kill both disabled people and non-human animals in situations in which it's absolutely not okay to kill normal people, and that illness and death of the disabled or the non-human just don't weigh as heavily in the utilitarian calculation as the death of normal people do.
Other philosophers absolutely don't want to equate disabled people with animals, because they're not some kind of animal liberation extremists like Singer! Of course humans differ, morally, from non-humans! But they still strain really hard to explain why disabled people, intellectually disabled in particular, should be included in the realm of individuals with full moral status. Maybe the disabled could have a kind of honorary human status, despite not being truly fully human? This idea comes up again and again in the literature. 

I really don't think the combination of the rampant ableism that exists in society, and the explicit endorsement of the view that it's right to harm and kill those with lower worth if there's some possible future benefit to be had for those with higher worth, puts disabled people in a very secure position. Experiments on disabled or marginalized humans would be more unthinkable and our situation more secure if society ditched the idea that we can justifiably harm less valuable individuals for the sake of the more valuable ones.