Flat design is the definition of art because it creates something without the intention of usability. Functionality that is hidden isn't usable by definition. It always annoyed me in early Mac UX that there wasn't a specific affordance for additional interactive behavior.
Option this, Ctrl that. Yes, they can be discovered socially and informationally, but that goes against intuitiveness.
The original Mac or Lisa was good in some ways, but it also problems with faux minimalism. In particular, Jobs insisted on a single-button mouse for 'simplicity', but that required inventing the entirely undiscoverable double click, which had to be taught, and still causes confusion today.
Yes. I agree. Also, the insistence on a "single task at a time" notion when real work required context switching.
Simplicity goes too far on the balance of, and in search for, advancement of design. Form + Function. Not an industrial beige box bucket of parts and not a confusing 2001 monolith, but something in the middle.
Option this, Ctrl that. Yes, they can be discovered socially and informationally, but that goes against intuitiveness.