#computing #information
# [[Epistemic status]]
#shower-thought
# Complexity
>Let $T$ be a Turing machine. For each input of length $n$, if $T$ makes at most $t(n)$ moves before it stops, then we say that $T$ runs in time $t(n)$, or has time complexity $t(n)$. If $T$ uses at most $s(n)$ tape cells in above computation, then we say that $T$ uses $s(n)$ space, or has space complerity $s(n)$.
>~ [[Ming Li]]
Length in bits of its shortest self contained description
I.e. diamond are of very low complexity, lot of repetitive pattern ([[Fractal]]?)
But a hard drive is full of random bits, high complexity