How typhoon signals work, explained

Experts we spoke to were careful to say that conditions vary by region, by income and by season, so treat these as starting points.

The short version is that several forces push at once, and no single one explains everything.

How it works

What stands out is how quickly ordinary people adapted, often faster than the companies and offices that serve them.

It is easy to dismiss this as a passing trend. The people doing it every day see it differently, and their reasons are worth hearing.

Readers who wrote in described the same pattern again and again. Something small and convenient became part of the daily routine.

Before you decide

Prices, habits and expectations have shifted a lot in the past few years, and this is one of the places where you can feel it most.

For most families, the practical question is simple: does this save time, money or worry? If it does not, it can wait.

Everyone thinks it will not happen to them, until it does.

The numbers tell part of the story. The people behind them tell the rest, and they are usually more interesting.