DS2.25 is OBSESSED with humanoid robots and MRIs after watching a Nova episode on robotics. He sat through the entire hour long show, asking questions about the structure of the robots and the function of their components.

As I type this, he's asking me to keep replaying a clip of an MRI scan and saying, "I really like this MRI. It peers into your brain to see how it works."

I definitely have to call some local hospitals to see if he can observe an MRI in action. He'd be elated!
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Success is not final, failure is not fatal: it is the courage to continue that counts.