HtPi reads as the Pi of Hₜ. ∏ is the product operator — the twin of the summation sign Σ. Where Σ adds, ∏ multiplies; where addition accumulates, multiplication compounds.HtPi 讀作「Hₜ 的乘積」。∏ 是乘積符號——加總符號 Σ 的孿生兄弟。Σ 相加，∏ 相乘；相加是累積，相乘是複合。
The subscript t marks time — H, for Horris, changing across a series. Taken together, ∏Hₜ represents one person's knowledge compounding over time, perhaps gradually becoming a way of thinking in its own right.下標 t 是時間的索引——H，也就是 Horris，在時間之中不斷演化。合起來，∏Hₜ 代表一個人的知識隨時間層層複合，久而久之，或許會慢慢形成自己的方法。
In Chinese, it can also be read as "HT派" — the HT school, or school of thought, if you'll forgive the pun. It sounds rather systematic. In practice, it often just means putting a few apparently unrelated things together and seeing what happens.中文也可以叫它「HT派」——既是 Horris Tse 的一派，也是某種尚在形成中的流派。名字聽起來很有體系；實際上，很多時候只是我把幾件看似無關的事放在一起，看看會發生甚麼。
