[flibble]

If the codebase is ginormous and hard to decipher then you could use the magic source control to go back in time to an early point in the codebase. It’s probably going to be easier to understand a codebase that is 3 months old vs 6 years old, so you could go and check out that version, understand it and then jump forward a few years. This also gives you the benefit of understanding the evolution of the code and understanding why it is not just what it is.