The only thing heavier than that block is the metaphor.
~Office Lackey Jack
Ha, I wonder how many people signed up for an eye exam, then ran away when it was done shouting "I know my eye prescription now and it was freeeeeeee..." Good luck getting contacts or glasses anywhere without an optometrist's certified prescription, though.
This issue caused a lot of controversy when British builder Paul Hopkinson originally shared this video on Costa Coffee's Facebook page.
Responses ranged from angry (and very British) to extremely pragmatic. Costa coffee themselves also responded to point out that the larger cup has space at the top and if the smaller cup did too that would equal the difference in size AND that the larger cup has two shots of espresso as opposed to one.
via Paul Hopkinson
As for the engineer's math, we're going to take his word for it and assume that he's solved the mystery of why both cups seem to hold about the same amount of liquid.