I was doing some blacksmithing in high school, mostly knifes.
When reaching 800°C steel is not magnetic anymore, it’s also a good temperature to start forging the steel. So I needed a atrong magnet to know when the steel was hot enough, I used what I have available: a hard drive magnet.
It felt quite “mad-maxy” to disassemble a broken hard drive to use it as a tool to forge knifes
Another issue that Darwin had is that for the theory of evolution to work you need very long periods of time.
The problem is that it has been proved by the physicist William Thomson using cold hard maths that the earth cannot be older that few hundreds millions years, which is not compatible with Darwin’s theory.
History told us that Darwin was right and Thomson wrong but it did not appeared this way at the time.