I spent a year working on GUI applications. It forced me to learn more about threading, asynchrony, and concurrency than I had in 8 years of working on back-end

I spent a year working on GUI applications. It forced me to learn more about threading, asynchrony, and concurrency than I had in 8 years of working on back-end services. after a long time mostly working on back-end code. It forced me to grapple with threading, concurrency, and asynchrony every day (stay off the UI thread!); I learned more