This was to encourage the participants to stimulate themselves with thoughts irrelevant to smoking.
Having other, irrelevant thoughts in his head could be risky.
First, he rules out irrelevant or erroneous thoughts in the reader.
Fatigue made irrelevant thoughts swim past, and one of them caught ;.
An irrelevant thought floated across the surface of his mind.
"A private thought, irrelevant," Brother Paul said, and knew he was lying.
Julie will worry, she thought, and then shut the irrelevant thought away.
He had the irrelevant thought that someone was making a lot of money selling Mausers.
As they headed over to the gaming section an irrelevant thought drifted through her mind.
Bands did not travel beyond their region of space, since they could not leave the lines; that was another irrelevant thought.