I'm familiar with the academic research in paper prototyping (for background, I have a Ph.D. in CS [HCI], have been a HCI course assistant, and published in academic HCI/design conferences).
To say that paper prototyping is the best implies a certain design philosophy, team structure, and organizational culture. It requires a certain buy-in, level of trust, and design pace that are not appropriate for all industries. There are reasons why most professional UI/UX design tools go to the pixel level, and why sketching interfaces never took off in practice.
That said, there are great benefits to paper, prototyping, and sketching skills. But there are also drawbacks which are not immediately obvious in reading the research literature or taking academic HCI classes.
I'm familiar with the academic research in paper prototyping (for background, I have a Ph.D. in CS [HCI], have been a HCI course assistant, and published in academic HCI/design conferences).
To say that paper prototyping is the best implies a certain design philosophy, team structure, and organizational culture. It requires a certain buy-in, level of trust, and design pace that are not appropriate for all industries. There are reasons why most professional UI/UX design tools go to the pixel level, and why sketching interfaces never took off in practice.
That said, there are great benefits to paper, prototyping, and sketching skills. But there are also drawbacks which are not immediately obvious in reading the research literature or taking academic HCI classes.