User blog comment:Ubersketch/Uncomputable function/@comment-37493717-20190621044906/@comment-39253344-20190623234538

Uncomputable functions are functions that can't be computed by any level-0 Turing machine. If we had a lvl1 Turing machine (which would be awesome) in real life, we could calculate (but technically not compute) an uncomputable function.