The older I get, the easier I fall for illusions -- or so it seems.
Example 1: It's a Small World
When I was in pre-school, I did not fear the small dancing dolls at the Disney World theme park ride.
When I was in lower school, the robotic dolls made me sick.
Example 2: Inverted Face
When I visited a Ripley's Believe it or Not odditorium in lower school, I saw the negative impression illusions as just that, depressions in a plaster slab.
When I visted a Ripley's Believe it or Not odditorium in middle school, I felt like the concave heads were following my every move.