> Yeah I'm sure his grandmother had no problem understanding the general theory of relativity.
Here[1], try and see if you can understand it. I'm sure you can, I'm sure your grandmother can too. Also if you have any specific questions about pharmacology, molecular biology or anything related feel free to ask, I might be able to come with a reasonably simple answer.
[1] https://www.youtube.com/watch?v=YgpD4XZP0uM
