Adding to this social inertia concept, there are countries where work ends at 6pm, lunch is at 1pm or later and dinner at 8pm or later. I live in one of them. If somebody occasionally have dinner at 7pm s/he's laughed at. If it's a regular thing, well, that's so weird. I don't expect that those habits passed on by generations can be changed in one day.
> I don't know if you meant it hyperbolically, but who the hell laughs at other people's meal schedule?
Having a shared meal schedule across society means it's relatively easy to plan social or otherwise shared events. You certainly don't have to care, but given how large a part of people's lives groups and group activities are, it's hardly surprising such a deviation would lead to jesting at least.
young people work 9-5 too you know. everything else follows that. not to mention when these young people eventually have kids and their lives revolve around school hours.
