I was about to disagree with the bicycle analogy, and realized that a tricycle is indeed different than a bicycle, at least by name & definition. Clever analogy.
Re:Lavabit returning in 19 days
by chrismorgan on Sunday January 01, 2017 @09:34AM
(#13295832)
I love my recumbent tricycle. Legally it’s a bicycle; the fact that it happens to have three wheels is irrelevant.
"We can't implement "AES 512 key size" because AES is defined for key sizes k∈{128,192,256} bits only; much like we can't make a bicycle with 3 wheels."
[0] http://crypto.stackexchange.com/questions/20253/why-we-cant-...