Someone claimed that they had "debunked" evolutionary psychology. I pointed out that it has quite a firm footing - nobody is doubting that evolution can produce psychological traits, and psychological traits can have evolutionary value.

So, the maximum effect to which one can "debunk" that branch of biology / psychology, is pointing out that "people are doing it wrong", and "people are understanding it wrong".

My comparison: I publish a video where I "debunk classical mechanics". In the video, I complain about mechanical problems with all sorts of products, point out that bridges can collapse (and indeed sometimes do), walls crack, cars are dangerous to crash at high speed, and that braking is difficult for roller skaters. Despite listing a whole slew of problems in applied mechanics, and despite having brought examples of people not getting their mechanics right... I have debunked nothing. Textbooks need not be altered.

This video accomplishes pretty much the same. I understand why it was made, but I would have made it very differently - and would have made it much shorter.

That statement alone is ample example of all the bullshit flying around in evolutionary psychology.

Actually, it is not. Willingness to trust outsiders and deal with them has an evolutionary aspect. Everyone's ancestors have needed to address this in their evolutionary past. Results have influenced their evolutionary success. An outsider could bring useful techniques or information, but could also bring a disease against which locals had no immunity, or take back information and bring about hostile interest. Determination of who to consider an outsider is moderated by rational thought and culture, but willingness to risk is also influenced by genes. So, even today, we are influenced - sometimes for good and sometimes for ill - by psychological traits which enabled some of our ancestors to make better / worse decisions in their environment. To make better decisions for ourselves, we should keep that in mind.

I chose my example for a reason. It is not bullshit at all. Building a grand palace of superstructure onto this little bit of understanding, that would be bullshit. To apply knowledge, one must know approximately where it ends. A fool doesn't and builds grand palaces onto one brick.

Thank you, but you don’t need to explain me why eugenics was a bad idea. :) I understand that.

I call bullshit again. You stated earlier that eugenics would work if we knew the “good” from the “bad” genes and called it more euphemistically.

Here, please read again. My words:

"I’m aware of what eugenics is / was, along with some other curious things that preceded (e.g. phrenology). I would say: a branch of science is likely to deserve the prefix “pseudo” if it has a single-minded goal to improve before understanding. Eugenics was such a doctrine."

From this paragraph, I expect a reader to understand (if they are willing) that I consider eugenics to deserve a prefix of "pseudo", that is, I consider it a pseudoscience. I bring another example of such a science. I also point out that eugenicists attempted to fix problems which they did not understand.

"Hypothetically, after gaining actual understanding of what genes are “good” or “bad” (quotation marks since “good” genes are only good in a given environment together with compatible other genes), eugenics might rise from the dead, but likely under another name and with a different character - since the original name has a ruined reputation and the original character was one of repression / discrimination. Indeed, maybe the resurrection has already happened, and the name is medical genetics - finding genetic patterns of risk and ways to avoid risk or fix results (apply gene therapy)."

In this paragraph, I make two main statements. I note down that eugenics took a character of repression and discrimination. But I point out that the goal of either fixing / improving genes or neutralizing the effect of bad ones - that didn't die with eugenics. People started understanding better. In these days, nobody wants to touch the world "eugenics" with a six foot pole, but genetically modified crops are growing on fields, and some patients are even receiving gene therapy. Databases are being compiled to detect genetic predisposition to illness or give personalized suggestions for treatment. I too have donated my genome for research to a local university, and I expect to learn some day what my genetic risk profile is - so that I could behave accordingly and avoid illness.

Then I proceed to explain why evolutionary psychology, behavioural ecology and game theory are extremely unlikely to end up in the rubbish bin where eugenics landed. And I fully stand by my opinion. :)