With "monotonous" ease?

“A paper clip gleams stacks of documents, a friend’s fact shines like a beacon out of a crowd, the smell of freshly baked bread evokes childhood memories – thoughts and perceptions such as these flow by with monotonous ease.”

What does “monotonous ease” mean? I mean, if these things are monotonous, how can they be an ease?

Hi there, Coolie

Monotonous doesn’t always mean boring. Here it means “continuous, regular, uninterupted”.
Such regularity can be reliable and comforting.