Having turned 40 last month, Ewing made a logical decision.

Once determined on what was, in fact, a logical and reasonable decision, few had been known to change his mind.

Or did he think she was incapable of making logical decisions on her own?

Spock was waiting for him to make the logical decision.

The answer depended simply on whether it was the logical decision given all the factors.

He learned how to write and to speak, but appeared to be unable to make logical decisions on his own at all.

She always tries to make the most logical decision based on the situation.

Right now you must think about all alternatives, then make the most logical decision.

After you have made a logical decision, your task is finished.