What Is Invisible?

John Lloyd Animation (credit: TED)

How do you deal with the invisible? The things you can't touch, see, or smell like atoms, time, gravity, thoughts, etc. This existential question is addressed by the long-time BBC producer John Lloyd (Hitchhiker's Guide to the Galaxy) in a humorous animated talk on invisibility. Lloyd suggests only two questions are really worth asking:

Why are we here? and What shale we do while we are?

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