I read this letter and then immediately read another discussion on HN, A new pyramid-like shape always lands the same side up https://news.ycombinator.com/item

I read this letter and then immediately read another discussion on HN, A new pyramid-like shape always lands the same side up https://news.ycombinator.com/item?id=44381297 https://news.ycombinator.com/item?id=44381297