There is a person at the end of every request.
How far away your data is↓
Each row is somewhere a computer fetches data from, and how long that wait really is: its own cache at the top, a machine across the Atlantic at the bottom. Those real durations are far too small to picture, so the right-hand column stretches them all by the same amount. If a cache hit took one second, this is what everything else would take. Pick a row to see how much slower it is than cache; that gap is the reason systems keep things close, put slow work in a queue, and try never to leave you waiting on a network.
Packet California → Netherlands → California is 150 million× slower than an L1 cache hit. If that cache hit took one second, this would take 4.8 years.
Log scale · 1 ns = 1 s · numbers after Jeff Dean, via Colin Scott