Watch in real time an experiment showing how we don't register all of the visual information that we receive through our eyes.
This film looks at the tough training regime undertaken by black cab drivers as they prepare for one of the hardest examinations they will ever take.
Follow trainee taxi drivers as they undergo one of the most difficult memory tests, The Knowledge.
Why are humans so good at spotting some things while at other times, cannot see what's right in front of them?
Episode three reveals how crawling transforms our understanding of the world, when our memory first develops and how ...
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