Mage's Disjunction involved causality, which made it very hard for Roland.
Causality, as a subject, fell in the category of philosophy on Earth. Roland wasn't very good at that.
Someone said that the only two things that could change the way people thought were math and philosophy.
Roland knew the basics of philosophy, but not really very much.
He had tried reading books on philosophy, but he couldn't persist and would feel dizzy when he read on.
He had also tried reading philosophical content in reality, but he never learned much.
Some people weren't cut out for philosophical studies, which was normal.
Therefore, it took him a long time to study Mage's Disjunction.
After more than a month, he finally got the hang of it.
However, it was still unstable.
He couldn't carry out the effect of "destroying magic equipment" every time.