Expertise hides the effort in work — Richard Cook paraphrasing David Woods' Law of Fluency
What looks like luck is at least partly hard work and tough priority decisions — Kent Beck tweet 
Sufficiently advanced technique is indistinguishable from magic. Unless you have an expert guide who's also closely studying what makes it work. See Learning From Masters
See Five Fundamental Trade-offs researchgate
> Well-adapted cognitive work occurs with a facility that belies the difficulty of resolving demands and balancing dilemmas. The adaptation process hides the factors and constraints that are being adapted to or around. Uncovering the constraints that fluent performance solves, and therefore seeing the limits of or threats to fluency, requires a contrast across perspectives.
Therefore apply Knowledge Elicitation to learn how different experts engage with Tempo Interruptions