Steven Pinker 2: What our language habits reveal

Steven Pinker at TEDGlobal 2005
What our language habits reveal  (transcript)
Summary
I know about an example of the story.
The story tells us that language is a window to look at human nature. It's not a creator or shaper of human nature.

Language is always testing you and you are testing someone by using language unconsciously. Language is used indirectly and ambiguously. It's complex and this is human nature.

I think that you also know that the words promise and obsoletely don't often work accidentally.
The speaker didn't tell us that language is ironical. I always think so and we have to be careful.

Words in this story
complexity /noun/  complication, problem, difficulty
complex /adj/ complicated
ironical /adj/  ironic
perpetuate /verb/  keep alive, keep going
recede /verb/  retreat, go back, go down