An item of sales literature is printed and sits around in a physical form. It can exist for months, years, or even decades.
The photo above shows a Book Society promotional postcard I found while rummaging through some old papers in my mother’s house.
It had been sitting there for about 50 years.
But a conversation, held between two people, or a group of people, is ephemeral.
A conversation takes place only in the present. In the moment. Now.
On the face of it, you might conclude that when you’re selling stuff, permanence is better than being ephemeral.