I went to an important meeting yesterday where the lives of weak and vulnerable people are discussed. We have a new broom in the chair. He wants all meetings to last just 1 hour max.
Result?
He skipped past all the important bits and made a few unilateral decisions.
No work was actually achieved thereby rendering it a waste of the entire hour for most of the attendees. We spent the afternoon catching up with each other and agreeing our position. Now we have to ensure that 'God' agrees. The process will take far more time than the meeting slot allocated.
It all sometimes depends upon context. You cannot just time box. And, the worst thing at meetings is when people are ignorant and don't pay attention: Play with their phones, crapberry's etc. If you're not going to contribute, piss off!