I'm not going to try to prove the opposite, but after some number of DECADES it's worth checking on followup research. Here are some good places to start:
https://ux.stackexchange.com/questions/30682/are-there-any-r...
https://skeptics.stackexchange.com/questions/4355/is-using-a...
https://news.ycombinator.com/item?id=2657135
the keyboard vs mouse controversy is an evergreen
I'm not going to try to prove the opposite, but after some number of DECADES it's worth checking on followup research. Here are some good places to start:
https://ux.stackexchange.com/questions/30682/are-there-any-r...
https://skeptics.stackexchange.com/questions/4355/is-using-a...