[sandesh247]

https://www.youtube.com/watch?v=EFOhjljieqs

same method, but in video form.

[mderazon]

Reminds me of these topology tricks

https://www.youtube.com/watch?v=6ebiyOtn7NA

[Kailhus]

Sorcery!

[penguin_booze]

Back then, I learned to swim via a correspondence course. Thank goodness for video these days.

[MichaelZuo]

This could also be an interesting Topology lesson.

[hackernewds]

much better with this advance technology

[greggsy]

While it was quaint to read through the high effort blog post, it was like reading a cooking blog that starts off with reminiscing about travels through an Italian village where they learnt how to make toast.