I have recently created this new video exploring psychology and optical illusions for the University of Hertfordshire. I hope you enjoy it – it features some of my favourite illusions!


  1. Fascinating information, but PLEASE get rid of the ‘music’ in the background. For those hard-of-hearing it makes your speech almost incomprehensible by distracting us.

  2. Hi i met you iN Edinburgh did fire walk, you launched Dream ON! In evening you did like a dream like state in club Could
    you tell me how you ou did it again i had a lapse in time like many others, have you done same workshop online would help so many people especially now thank you Brenda

  3. I only noticed the bus change colour which is strange because I am actually paranoid abut children running out into the road! Still trying to figure out the boomerang.

    1. The boomerang is because the one on top is actually placed further left than the bottom one. Since the sides slope in we don’t notice that the bottom side of the top boomerang aligns with the top side of the bottom one, when to make the comparison fair the top side of both should be aligned. Explaining things to people isn’t my strong suit so sorry if this wasn’t helpful.

  4. Thought this might interest you, plus family. He does good quirky things so Signed up ages ago. Isn’t this rain great, now everywhere will get a proper soaking, I’ve even put the heating on ! Axx

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