When you read a charged situation

Reading a situation can mean carefully checking things out,
studying and analyzing, or it can mean a quick look over the
wall and going by gut. Depends on the character.

When you closely study a situation or person

To discern realities you must closely observe your target. That usually means interacting with it or watching someone else do the same. You can’t just stick your head in the doorway and discern realities about a room. You’re not merely scanning for clues—you have to look under and around things, tap the walls, and check for weird dust patterns on the bookshelves. That sort of thing.