I've seen that more than a few cases where people used the wrong data structure (like array, for O(N)) look ups, instead of a hash. All the inefficiencies add

I've seen that more than a few cases where people used the wrong data structure (like array, for O(N)) look ups, instead of a hash. All the inefficiencies add up, at scale. a 3% inefficiency means you're spending ~3% more on compute. CI takes longer. Dev velocity decreases.