Building useful and nonporous layers of abstractions and being able to quickly shift between them seems to be a key skill. When each layer leverages another, yo

Building useful and nonporous layers of abstractions and being able to quickly shift between them seems to be a key skill. When each layer leverages another, you can rapidly build something impressive. This in turn implies apart from technical skill, charting a good course from layer to layer can make a big difference, vs meandering without quite knowing where you are going.