Usability is part of the tool
Technically you could drive a nail with a block of metal like a caveman, but we use hammers instead.
Yes, a handle amplifies power and accuracy with each strike. It also decreases user effort, risk of injury and improves grip.
The hammerhead is the technical solution, whereas the handle is the usability solution.
Driving nails isn't only about raw power. It's about who is driving the nails and if they are doing so efficiently, safely and with as little frustration as possible.
The usability solution isn't an add-on to the technical solution, they’re integral parts of the same tool.
