4 ms·

He sounds like a ‘product’ guy.

• DonHopkins 8y ago
  The TrackPoint grew out of his university research, and a lot of user testing and measurement and iterative improvement went into it before IBM allowed him to ship it in a real product. (The youtube video talks about the pressure=>velocity mapping curve they developed and refined.) He collaborated with his father, a material scientist, who designed the rubbery grippy material so it felt just right.