Going out on a limb here but this....
Implies not only a plan but the intelligence to execute a plan. Add in the fact that they found "dozens" of artifacts and it is clear that the plan was executed multiple times.
Quote:“The cores and flakes we recovered are clearly knapped and are not the result of accidental or natural rock fracture,” Harmand said. “The Lomekwi 3 knappers were able to deliver sufficient intentional force to detach repeatedly series of adjacent and superposed flakes and then to continue knapping by rotating the cores.”
Implies not only a plan but the intelligence to execute a plan. Add in the fact that they found "dozens" of artifacts and it is clear that the plan was executed multiple times.