Here is conference talk that takes audience in time travel few decades ago. Bret Victor is using old fashioned slide projector, has old fashioned clothes and pens in shirt pocket :)
He is speaking about programming languages and computer evolution:
Remarks
Bret Victor prooves that computer evolution is tightly coupled with human’s openess to change. It is hard to learn doing same things in a new way and unlearn what we’ve learned and are good at.
Looks OK! 