Such is modern computing: everything simple is made too complicated because it's easy to fiddle with; everything complicated stays complicated because it's hard to fix.
Caches aren't architecture, they're just optimization.
Narrowness of experience leads to narrowness of imagination
A smart terminal is not a smartass terminal, but rather a terminal you can educate.
Fancy algorithms are slow when N is small, and N is usually small.
There's nothing in computing that can't be broken by another level of indirection.