Or heard the term "monthly / quarterly / year end closure in places they worked at. Or faced contractual penalties for late deliveries. Or faced some deadlines caused by investors / burn rate, or any number of reasons. Or, the other way round, had to wait for someone to finish things they needed or wanted, e.g. a plumber showing up at their place to repair a leak. People refusing to commit and see those commitments through are such a pain to work with.