A pyramid seemed like a ridiculous solution, but for an incredible task, an impossible solution had to be tried.
A pyramid seemed like an absurd solution for the task.
A pyramid was the only viable solution they could attempt.
Examples of control activities
Sun does not circle around Earth, and Earth is flat.
He wanted to know the time, but didn't have a watch.
A man is getting his hair cut at the local barber.
We have no need to retain any supervisory activity regarding the workpapers.
The pitcher is looking towards home.