This is a problem I fight against nail and tooth almost daily, and it's closely related to the not invented here syndrome [0]. I would even go so far as to call

This is a problem I fight against nail and tooth almost daily, and it's closely related to the not invented here syndrome [0]. I would even go so far as to call it the Dunning–Kruger effect of technical knowledge. For context, I'm a frontend developer slash consultant who usually gets called in when development slowly grinds to a halt due to an overbearing number of bugs and regressions. Almost exclusively, at their core these problems can be reduced to underestimating complexity and trying to build something from scratch. It's a very common theme — "I can build form validation from scratch, that's easy." But then there's async validators, fields that have circular references and timezone issues. "I can build a table from scratch," but then there's endless scrolling, custom filters and performance issues. I think the common denominator is that all of these issues look simple when you address the smallest possible usable case, but quickly blow up in your face when you start building without thinking what you need to add on later. Unless you want to hire me, don't be that guy. Forms, tables, network layers and most other things are already solved problems — please don't try to build them from scratch unless you really need to and have a good plan. [0] https://en.wikipedia.org/wiki/Not_invented_here https://en.wikipedia.org/wiki/Not_invented_here