My wife is taking classical guitar and one of her pieces has the C with a | through it, indicating cut time. I understand cut time in my world: fiddle tunes are in 2/4 with two groups of four 16th notes. Written in cut time, you have measures with 4 groups of two eighth notes each, which is much easier to read, although you have to apply the 2/4 feel. But as a mental visualization matter, how is doubling the written duration of the notes cutting anything? It seems like the opposite.