The specialist sees a variable limit; visitors need to know that fewer places may be available.

The map is a useful comparison, although the real journey includes details the map cannot show.

The new route may be faster, but we still need to check how it affects people with limited mobility.

In simple terms, the rule keeps the room safe by limiting the number of people inside.

The process is like a queue at a bakery: serving people in order keeps things fair, although real cases may need exceptions.