Software changes in 7 years - people don't. [I mean the average person; individuals age and get more experienced, but new ones come in.]
Today's homo sapiens brains function the same way as in 2006. Productivity of mental workers responds to disruptions in the same way as in 2006.
A large majority of programmers and other people working now in IT are the very same people that were analyzed in 2006.
They have, but if you look at it in terms of fundamental change, then of course not.
For example, a cell phone from today isn't fundamentally different than a cell phone from a decade ago. They're both computers and can be used to make phone calls. But with the cellphone of today, I can have a virtual meeting with anyone from anywhere, face-to-face. That alone is a huge improvement for distributed teams.
Today's homo sapiens brains function the same way as in 2006. Productivity of mental workers responds to disruptions in the same way as in 2006. A large majority of programmers and other people working now in IT are the very same people that were analyzed in 2006.