Already addressed in detail earlier.
The blinkered notion that everyone has their own constructed subjective reality and that there is no objective reality is at the HEART of postmodernism.
Creatures that get false data from their senses don't survive make more of themselves. There is a limit to how much "not reality" senses can show before they get the creature killed.
And linking to a TED Talk... used to be interesting stuff before it became the home of pop-science BS.
I am currently sitting in a chair.
It is not a "model" of the chair that is holding me up.
I did in fact link to multiple definitions and descriptions of postmodernism making it quite clear that they believe those things.
When I get back later I'll wade into the idiotic mire of postmodernist BS and find some examples. In the meantime, look into the Sokal affair.
Go back, pay attention to the discussion instead of looking to score internet points, and you'll notice that I'm not the one who brought up this idiocy about reality being subjective.
Of course, I suspect you're well aware of that.