You know exactly what type of problem I'm talking about. Making your own programming language. An IDE that supports structural editing. More and more advanced static type checkers. Custom build systems. I'm sure you can think of others.
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Space exploration
十年後，我們兩房一廳的公寓塞滿了東西和兩個孩子，那天我決定必須把它清掉，真是令人傷感。它自從我離開大學後便積滿了塵埃，但同時也象徵著我曾經對語言學習的認真投入。