math on widths doesn't add up (Sean Cole (Pi))

[Quentin Long]

sez Sean Cole (Pi):>I've just been teaching my youngest about the 4th - nth dimensions. Time is
>not the 4th but the 1st temporal dimension. If the 3 spatial dimensions are
>Length, height and width then the 4th is depth, ie, going inwards and
>outwards as the easiest way to picture it (but not truly representative).
>That being the case, how would you describe the 5th spacial dimension.
>That'll twist your noggin if it's not something you've thought of before :)
One fictional contemplation of the 4th and 5th dimensions:https://johnesimpson.com/pdf/Ifth_of_oofth-waltertevis.pdf