Verizon developed a special knife that uses pressurized air to slice through lawns so fiber optic lines can be buried. The tool cuts through grass but does not break sprinkler pipes and gas lines.
There is a table saw that automatically stops in less 1/1000th of a second when it comes in contact with flesh, and the inventor was crazy enough to test it with his finger.
Some crows have the intelligence to fashion tools, a human like behavior not seen in many primates.
The screwdriver was invented before the screw.