Theory: "imposter syndrome" is simply seeing the truth. No one lives up to the social conception. Einstein needed help with mathematics. The realistic perspective is the curiosity of a scientist; the humility of a mortal. Knowing the premises does not automatically imply you know all the consequences... even though it "should".

Bugs have been found in production binary search.

Skipping bubblesort, I think quicksort is easy to implement, if you know Hoare's fp insight (I remembered it, but had to check it was him). Making a version that is both efficient and correct may be harder for me... Similar for Boyer-Moore substring matching (I remembered their names!)