Jef Raskin in The humane interface: new directions for designing interactive systems on the power of modelessness and monotony (two principles that heavily influenced Notational Velocity‘s development):
If I am correct, the use of a product based on modelessness and monotony would soon become so habitual as to be nearly addictive, leading to a user population devoted to and loyal to the product.
I think this explains the status Notational Velocity has reached, and devices like Apple’s iPhone as well.
On a related note, a recent change on Facebook follows the principle of monotony: when commenting on a status update, there is no longer a button. That leaves only way to post: hit Enter.
