A human can come up with a system to help them record hidden pine seed locations or random numbers fairly easily though - marks in the ground or paper and penci

A human can come up with a system to help them record hidden pine seed locations or random numbers fairly easily though - marks in the ground or paper and pencil, for example. I would suggest that the evidence indicates otherwise. Written language seems to have taken humans tens of thousands of years to work out, so coming up with that system is clearly not fairly easy. Keeping track of 50000 locations over a 15 mile radius such that they can be found again six months later in winter under a foot of snow using marks in the ground made with a stick, without a written language? That seems... difficult.