Which is more important in practice: deep theory or hands-on building, and why?
On one side, there's the argument that theory is what lasts. Languages and frameworks change every few years, but understanding algorithms, data structures, and how things work underneath stays useful your whole career. People who learned the fundamentals well seem to pick up new tools faster.
On the other side, plenty of strong developers say they learned most of what they use by building real projects and breaking things. They argue that you can know a lot of theory and still be lost the first time you have to ship something that works.
Did theory or hands-on work matter more for you in practice, and did that change as your career went on? And if you had to teach someone from scratch today, which would you put first? #technology