RubyConf 2023 - Which Time Is It? by Joël Quenneville

Can you add two time values together? Yes. No. Not so fast! Reset your clocks and join me on a graphical tour of time itself. You'll discover how "time" is more than a single thing, build intuition around what different operations mean, and get a sense of when some operations are nonsensical. You'll leave with a better mental model for thinking about time and avoiding subtle time-related bugs in your own code.