The Hardest Interview2 Top [extra Quality] -

It shows you know your limits (high EQ) and that you are logically working on them (high AQ - Adaptability Quotient).

If Big Tech is a 9/10 difficulty, firms like or Hudson River Trading are a 12/10. the hardest interview2 top

While many companies copy the "Whiteboard Coding" style, Google and Meta set the curve for difficulty at scale. It shows you know your limits (high EQ)