Measuring and normalizing the operations isn't necessarily straightforward - suppose we're in a streaming context (common for encrypting things for the internet

Measuring and normalizing the operations isn't necessarily straightforward - suppose we're in a streaming context (common for encrypting things for the internet), in a real-world environment, where computation time might depend on what other applications are running, or the temperature of the CPU; max operation time will vary over time and possibly unobservable changes in circumstances. It's easy to spitball a seemingly 'good-enough' solution to this, but crypto doesn't seem to be a place where 'good-enough' is actually good enough. https://superuser.com/questions/432579/how-is-cpu-temperature-related-to-clock-frequency-and-processor-utilization https://superuser.com/questions/432579/how-is-cpu-temperatur...