One minute for a building

An original explanation of an invented speaking event.

For our next lunchtime event, each speaker will have one minute to describe a building they pass regularly. It need not be famous, beautiful or especially old. A bus shelter, a row of garages or an ordinary shop can provide enough material if the speaker notices something particular about it.

We have asked speakers not to show photographs during their minute. A photograph would immediately settle many questions about the building's appearance, allowing the speaker to point instead of choosing a precise description. We also want listeners to compare the different pictures they form in their minds before seeing the building. After everyone has spoken, photographs may be shared and those differences discussed. The restriction is part of the exercise, not a claim that pictures are an inferior way to record a place.

In your own words, explain two reasons why speakers are asked not to show photographs during their minute.