Do you repeatedly define the same field/attribute across different classes / entity types?

Consider “basic theories” that are particularly simple in two ways.

In order to integrate quantitative data, you need to know (a) if units are commensurate, and (b) if so, how to do conversions.

One of my favorite features of the PyCharm code editor is go-to-declaration: you can hold the control key and hover your mouse over a usage of a symbol, and you’ll see a tooltip with a preview of the declaration/definition of the symbol.