At the time of Feynman&#x27;s death, there were two quotes on his blackboard (along with a to-learn list, and several formulas). The first one is &quot;What I cannot create, I do not understand&quot;, followed by &quot;Know how to solve every problem that has been solved&quot;. Since the years I&#x27;ve known those quotes, I have those as my personal motto for software development.<p>Also give me a cute excuse to boo-boo Java-land and framework heavy ecosystem ;)