Alongside recognizing ``Insidious Optimizations'', this phrase is one of those most novel, timeless, and obviously valuable thoughts I've had in my life. It's a statement of the realization that going where others don't allows one to innovate, if only due to the lack of any competition. This pattern will serve one well who uses it, as it merely requires to look upon others, and not wonder what they do, so much as what they don't. This is what has lead me to experimentations with: memory-to-memory architectures, machine code development, structured language modelling, and similar such endeavours.
In any case, this thinking is still naturally related to insidious optimizations, which blind others to possibilities through prevalence. Unlike insidious optimizations, this pattern is perhaps easier to follow by merely reading a history book for ideas. I firmly believe in the ability for one who's capable to obsess over such things for a long enough period of time and eventually have novel ideas.
The primary downside to this mode of behaviour is how an abandoned field also wants for an audience. It's much easier to get an audience with a popular field, but any popularity wanes much more easily.