We’re going on a lot about ontologies at the moment so it seems right to explain what they are and how they fit in with everything.
Fabien Gandon has put together a brilliant presentation for you to read through. It will explain everything from the basics to lower level stuff. very accessible and highly informational.
In response to slide #45:
When A.Einstein found relativity theorem he thought that splitting an atom will take hundreds of years. But, it is done in 1940s.
Time passes quickly …