Help me understand this: "individuals, can't respond to population relative selection pressures"

[Gottservant]

Evolution does not occur on the individual scale. You personally never evolved and you never will. Evolution occurs on the population scale across many, many generations. It’s not measured by the difference between you when you were young and you when you’re old. It’s measured by the genetic differences between your ancient ancestors and your future descendants.

Yes, but some of those changes were anticipated, and some were not...

...you are turning a blind eye to reality?

Do all populations come together into one grand population of Evolution? If there is a selection pressure for it (to be so)?

 

[gaara4158]

Yes, but some of those changes were anticipated, and some were not...

...you are turning a blind eye to reality?

Do all populations come together into one grand population of Evolution? If there is a selection pressure for it (to be so)?

I don’t know what you’re claiming has been anticipated. The changes that occur across generations are in response to environmental pressures that weed out genes that aren’t producing reproductively successful individuals.
It’s unlikely that environmental pressures would be such that every population of every species suddenly started evolving into the same form, but it’s happened on smaller scales. Carcinisation, for example, is an instance of convergent evolution where multiple non-crab crustacean species evolve over time into something crablike. Carcinisation - Wikipedia