Exquisitely crafted and beautifully explained. Thank you for sharing during this time we are all at home. My nine-year-old loved it. He now wants to watch all your videos and has asked to borrow a mirror to take to his desk to, “work on something secret.” Thank you!

Incredibly interesting, thank you for starting this KZfaq lecture series!

Optical illusion explained for everyone. My kids enjoyed it...

thank you for explaining how it works

Wonderful!

Inkledibal !

Love these illusions Kokichi Sugihara! I’ve been an enthusiast of optical illusions for many years and I appreciate your innovation in these 3D printed illusions. Are you familiar with Jerry Andrus? He was a magician who invented a variety of three-dimensional illusions and impossible objects in the 1980s - early 2000s, very similar to your designs. The creativity is astounding, and I would love to purchase some of your illusion models. Is that possible? Thank you, Rex

Thanks you Sensei

This was great, have you planned to make English versions of part 2 & 3 as well?

So this is how Odysseus' men escaped Polyphemus?

WHERE CAN I BUY THIS edit: found it on Amazon.do.jp (the Amazon.com for 🇯🇵)

Where can I buy the puzzle kit? Amazon?

I am libertarian and I vote for this video.

When you go down from 3D to 2D, how about going from 4D to 3D?