One thing that hasn't changed, though, is that we still have to hear the new ad 2 or 3 times before it begins to affect us, even when we're already familiar with the advertiser in question and have a positive opinion of them.
Quantum Mechanics and General Relativity are both accepted as scientific fact even though they're mutually exclusive. Albert Einstein spent the second half of his life searching for a unifying truth that would reconcile the two.
String Theory describes energy and matter as being composed of tiny, wiggling strands of energy that look like strings. And the pitch of a string's vibration determines the nature of its effect.
What this means is that the first week of every new series of ads will continue to yield softer results than you can expect to see in weeks two and three.
You see a person when you look in the mirror that no one sees but you. Other people see a person when they look at you, but you're not that person, either.