As a former scientist, Sears devotes considerable time to discussion of the science on which he based his theory.

Maybe he was basing his theory on too little evidence and refusing to admit it.

"I base my theory only on the weapon used."

The institute bases its theory on a study of 18-year-old Danish draftees.

He based his theory on a list of 58 unanswered questions about the assassination.

He based his theory on the main effects, or alleged effects, produced by the mushroom.

It sought to base its Marxist theory on the everyday life of supposedly revolutionary factory workers.

The territorial government based its theory in Parliament's treatment of the territories, which was becoming more like how it treated the provinces.

His math was superb, and all of the components he based his theory around do exist.

He based his theory of atavism on the prevailing scientific racist theories.