As soon as he sees her pull out the journal to take notes, Strange instantly knows that asking Christine about this was a good idea. He nods at her assessment.

"Sight, touch, sound...I've no idea about smell or other things such as scrying or location spells as obviously, I can't do those on myself." Though hey, wait a moment. Strange perks up a little as he looks over at Christine. "But you could wear the scarf and I could try and find you with scrying!"

Hot damn, it sure is useful having another person to help test something.