Well I was watching a stone age based episode of bushcraft with ray mears (after also having watched I, caveman :P). I was getting really into the stone age spirit, which was fun.
But I started wondering about some things. Eye hand co-ordination would have been very important.
And people would have been constantly constructing tools, weapons and traps (and art, clothes and musical intruments too). Alot of those basic stone tools are tricky work, further, the design of weapons and more complex tools is alot of work. Very time consuming.
The design aspects of these things are actually somewhat complex problem solving and engineering jobs. Traps are a similar issue, one has to design the trap based on whats available. Its alot harder than youd think. How do you create a straight arrow? How do you glue the spearhead/arrowhead? How should each thing be shaped, made of what etc...
It makes old games like kings quest look like something for a simpleton.
Aside from being physical fine hand eye manufacture work, its quite a mental puzzle.
Additionally, certain people would have been plant and animal experts. They would have mentally catalogued massive amounts of information to pass on about each medicinal, edible, or tool material plant.
The same with animals - to hunt and trap them, one would need to mentally catalogue massive amounts of behavioural and other information. Which parts of the animal can be used for what. Then again with the problem solving, for plants, how to make that tool, how to heal that ill. For animals, how to hunt that beast, how to trap that small animal.
Its not just skills, it seems really quite mental.
And then nowdays we have the concept of "mental exercise", that if you dont use your brain you lose it. Perhaps maintaining mental libraries of information, and using logic to attack problem solving situations, or designing to make tools is the basis of this maintenance exercise?
What say you paleohackers, is problem solving and mental cataloguing the basis of mental exercise? Do we need alot of it to maintain cognition?
And on a related note....is manufacture one of things part of what makes life meaningful for humans?
(It seems very satifying to make something. Very few of our modern jobs involve us personally overseeing the creation of some end product. Theres something very lacking about not having a specific output..)