Healthcare in Mexico has been free and public for decades. There are still paid private practices and having social security limits the public providers you can use but Article 77 Bis-1 of the General Health Law states that anyone without social security can be treated for free. That article was first published in 2002 and last modified in 2023. This is just the administration claiming that they enacted (excellent) old laws.

Masturbation among birds is ‘natural’ and should not be punished. It’s interesting how humanity has regulated its own biological behavior, we have rules for where and how to eat, sleep, defecate, urinate, menstruate, reproduce, masturbate, etc. I get that some of these came from hygiene and personal safety but still find it weird, and even weirder that some people expect birds to follow our social constructs.

You’ve obviously never kissed a naked mole rat

Artichokes. You pay for the whole thing but throw away half of it, you literally have to scrape the value out of it with your teeth.

The Museum of Modern Art in New York has some games in their permanent collection: Games in MoMA

Is d/dx x^2 really equal to d/dx (x+x+x+…+x)? Inserting some value for x seems to break that part. Say x=5:

d/dx 5^2=10 and

d/dx (x+x+x+x+x)=d/dx 5x=5

10 ≠ 5

I understand that x^2, (x+x+x+…+x), and x*x are the same. But its equivalent to doing d/dx x*x =x as d/dx n*x=n. Again this results in 2x=x or 2=1.

The mistake is to treat a variable as a constant and deriving in that way. Doing a sum x times means you have an unaccounted variable when you do d/dx (x+x+x+…+x), this is not 1+1+1+…+1 x times. i.e. The rate of change of one of the x is not incorporated into the derivative.