> Figuring out things you neither wrote nor fully studied beforehand, without breaking everything, is not some waste of valuable time, that IS the valuable expe

> Figuring out things you neither wrote nor fully studied beforehand, without breaking everything, is not some waste of valuable time, that IS the valuable expertise itself. Amen to that! It's basically how you start understanding how complex systems work in real-life and the lessons you learn while there can and will help you in every job you will have afterwards. Personally I also think it is what makes remarkable developers vs developers that just stay in their (usually tiny) domain.