On page 28 why do you think Santiago states that the “idea frightened him”

Hello. You did not say what text the question is referring to, which will make the answer inaccurate, but I hope it helped you.

Santiago says that the idea emitted beforehand scared him because it was a different idea than he imagined and that confronted what she believed, or even, that generated a very terrible result and that was far from what he wanted to do or that created a more harmful than he imagined.

Anyway, the idea was something that caused him fear, anxiety and fright, either by execution, or, by the result.