4th: When is an exact search not an exact search?

A friend was trying to direct me to something she had found on ancestry, and I simply could not see what she was seeing.
Given I believed she wasn't telling me porkies, we went through our respective settings.
I nearly always use the "exact matches only" setting, with wild cards if need be, she didn't.
I don't see that it should have mattered as I had typed, accurately, and later rechecked by doing a copy/paste of the exact name from the results, but still, the chap only came up when "exact matches only" was unticked!