Obfuscation patterns work on misdirection. It's not true invisibility. It's more like the blind spot in your eye that your brain edits out.
"Let's see what's back there." Darcy closes her eyes and walks toward the missing corner, arms outstretched. She veers off to one side, ending up next to the office's small window. "Am I there yet?" She opens one eye.
"Dr. Cohen's good," Manish says. "Even if you know there's a pattern hiding the corner, it still misdirects you."
"I've got an idea," you say. You pull out a glowfly pattern from your binder. It summons small glowing balls of light. Darcy convinced you to research it so she could use it during a party last weekend. You let it fill your mind, then fling your hand up in a large arc toward the missing corner.
Balls of soft yellow light billow out, then drift down like snow. They outline shapes in the corner, limning their edges.
Manish lets out a small sound of surprise when the corner appears as if it were never hidden. A small free-standing bookcase and an escritoire fill it.
"Obfuscation patterns don't work once you've directly perceived what they hide," you say. "I've read up on them."
Darcy gives you a fierce smile. "Way to go."
Take That, Dr. Cohen