So what am I doing wrong, then? (weight loss content)

I’m not trolling, I’m just very confused about what you are trying to say.

Well, then perhaps do not correct people with a response of “No” when you haven’t got a sufficient grip on how the prevailing environment, in conjunction with evolution. Shapes the optimal dietary profile of a species.

Humans are not exempt from enjoying this legacy, but seem hell bent on scoffing man made, processed foods which result in obesity and reduced life expectancy.

how far do I have to walk to burn off a pint of beer? I’ve done 3 miles, and need some refreshment…

Well, you’ve certainly earned it. Try MFP for the Cal stats on your beer.
I’m guessing that MFP may also give you a rough approximation of how much work you will have to do (walking) in order to create the caloric deficit you now intend to poor your pint of beer into.
😉

You are saying that humans have a predefined diet that they are best suited to evolutionaryily speaking. I am saying that rather than evolving to a set diet (like pandas or bison or whatever) we’ve evolved to be flexible.

Firstly you undermine the validity of looking at our diet, wrt, to our evolution. Our dietary flexibility as you put it does not extend to eating the processed crap filling shop shelves today.

But, even ignoring this as you do, the results are speaking for themselves. Current, modern, western diet is making people too heavy.
Their bodies are reacting badly to the foods being consumed. This should tell you something, no ?.

I’m popping out for a coffee.

how far do I have to walk to burn off a pint of beer? I’ve done 3 miles

1 pint ale is around 200kcals (obviously depends on the beer)

Walking should burn around 224 kcal per hour (at 3mph and assuming you are about 150lbs).

So you should be ready for another round now.

Other exercise is available though:

Well, then perhaps do not correct people with a response of “No” when you haven’t got a sufficient grip on how the prevailing environment, in conjunction with evolution. Shapes the optimal dietary profile of a species.

But I have got a grip on evolution. What I don’t have a grip on is your point.