Yeah. But check out the problem at the link.
The problem started when 1/3 and 2/3 (portions) were “equated” with 0.333.. and 0.666.. (decimal values).
Further discussion was only intended to strengthen the initial error; hence, arrested development.
Now, mind you, I took Cboldt’s math exercise to be a bit of “funnin’” us. I thought it quite amusing (plus, I’d seen it before).