Use "on reflection" in a sentence

1. On reflection the chess metaphor is not a felicitous one.

2. But, on reflection, this depends for example on one's theory of oligopoly.

3. 21 Of course, on reflection, Deborah didn't really think it was that melodramatic either.

4. I seriously considered disembowelling Ian for this, but on reflection that would be a little harsh.

5. It was no wonder, on reflection, that Lorimer had been so eager to spend time in Cleo's irreverent company.