"Leaving a trail of breadcrumbs" has been a phase for a long time. That that's what stuck, I suspect, because "breadcrumbs" is more specific and memorable than "pebbles," or because the breadcrumbs would be noticed and followed by a hungry someone other than the person who put them there (unlike the pebbles, which are of no use to a random passer-by).
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments