The cogent arguments against this view are set forth in the article on Arthropoda.
The political reasons for these arrangements may have been cogent, but they injured France at the very outset.
That it formed the starting-point, and largely prescribed the course of thought on the subject of planetary origin is due to the simplicity of its assumptions, and the clearness of the mechanical principles involved, rather than to any cogent evidence of its truth.
But cogent thoughts were few and he began to feel like an empty-nested squirrel facing a long, tough winter.
However, Dean possessed no cogent thoughts on what to do with this new information.