Know the difference

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image showing Know the difference

GeekyStudios on August 17th, 2018 at 03:28 UTC »

You know, that's not a bad analogy.

PM_ME_UR_KNOT on August 17th, 2018 at 04:24 UTC »

Except when you reach for the second one, if you forget to check if there's a roll there you end up with some other random object in your hand instead

Gresnak on August 17th, 2018 at 06:16 UTC »

We used this analogy in University but in that case there was a third example: undefined, which was explained as the complete absence of a toilet roll holder.

The illustration obviously works as I am reminded of it every time I reach for a roll of toilet paper.