Loading bars explained:

@JenMsft
"People assume time is a strict progression of cause to effect, but actually, from a non-linear, non-subjective viewpoint, it's more like a big ball of... wibbly wobbly... timey wimey... stuff."

Source: https://m.youtube.com/watch?v=q2nNzNo_Xps
@mullana

Doctor Who - Blink - Big ball of wibbly wobbly... time-y wimey... stuff.

YouTube