Illogically

He illogically believed that he could swim across the ocean.

She illogically thought that she could study for a test in one hour.

The politician illogically claimed that the moon landing was fake.

She illogically ignored the warning signs and continued to eat unhealthy food.

He illogically insisted that he could finish the project alone, even though it was too big for one person.

She illogically chose to drive home after drinking too much alcohol.