What did Tara Westover mean by comparing her childhood family accident with "choices coalescing into sediment"? What was Tara Westover trying to imply when she compared the accident her family suffered in her childhood with this? > Choices, numberless as grains of sand, had layered and compressed, coalescing into sediment, then into rock, until all was set in stone. (see here) The quote is from _Educated_

She is describing the accumulation of choices, imagined as little bits of sediment, that layer upon one another to create something definite and predetermined: the accident imagined as a formation of sedimentary stone.