I would guess they were used as knives, too but I find them with the tips battered
The end-battering is from previous, unsuccessful attemps to remove them from the parent cores they came from.
https://en.wikipedia.org/wiki/Lithic_core
FWIW
The end-battering is from previous, unsuccessful attemps to remove them from the parent cores they came from.
https://en.wikipedia.org/wiki/Lithic_core
FWIW