....and it was gill who had remembered a certain explanation - regarding 'maths in the round'....nothing ever disappears....if it isn't in one container - it will be in the other etc etc....and sometimes you can hear noises...a rumbling or would that be gurgling - through the reflective surface, let us say....go figure:

Gill (@gilly_breeze) / Twitter

https://twitter.com/i/status/1364889494772740101