There are certain bodies of human knowledge and practice which aren't usually referred to as "technologies", and I think that leads us to underestimate their complexity and importance.
In particular, I'm thinking of textiles and agriculture. It's no coincidence that both were prime targets of industrial mechanization, occupying a huge proportion of all human labor.
Who is underestimating the importance of food and clothes in history? Certainly not the historians. Agricultural output is literally what made and broke empires.
The TFA mentions wood, along with string, twine, rope, etc. Soft technologies surely would also include leather, and other animal products as well.
Cordage can be a force-multiplier as well, in addition to what others have said about pulleys and slings. One could tie many strings/ropes to a tree or animal and pull with multiples of a singular force.
Not mentioned in TFA: cordage is a critical component in slings, an early, powerful ranged weapon.
With some sort of pulley, rope allows a single human to excert large amounts of force trough leverage, often in ways more convenient than other forms of mechanical leverage. (Such as actual levers.)
With just wood and rope they could probably accomplish amazing things. I'm convinced on a personal level that stone age people had cranes to lift boulders with.
Stone age when? 40,000 years ago or 4,000 years ago? Göbekli Tepe is from a mere 11,000 years ago. I mean cranes for ziggurats, sure. Cranes for megaliths I dunno about. Maybe you just got a lot of beefy men to push the giant rock into an upright position, maybe brute force was the point. Giving them simple machines is a slippery slope (which is itself a more plausible paleolithic/neolithic technology) to a kind of paleo-punk where you retrofit them with Flintstones cars and apartment buildings and production line belts, all made from hide and rope and mammoth grease.
We tend to picture prehistoric technology as a progression of increasingly clever stone tools because stone is what survives, but rope may have been closer to infrastructure
Stone age peoples still existed until fairly recently in Africa and Australia, so stone age technology isn't prehistoric at all. What's prehistoric is stone age technology from other parts of the world.
In particular, I'm thinking of textiles and agriculture. It's no coincidence that both were prime targets of industrial mechanization, occupying a huge proportion of all human labor.
Cordage can be a force-multiplier as well, in addition to what others have said about pulleys and slings. One could tie many strings/ropes to a tree or animal and pull with multiples of a singular force.
With some sort of pulley, rope allows a single human to excert large amounts of force trough leverage, often in ways more convenient than other forms of mechanical leverage. (Such as actual levers.)
Rope can also be used for 1:1 power transfer.