The world according to Morpheus
“Now you CAN just fashion it from mortar. Paint red oblongs onto it and it’ll LOOK like a wall – but it won’t be.
“Alternatively, if you pile rows of bricks onto one other, that’ll look like a wall too – until you give it a little shove.
“But if you build it from bricks AND mortar, you’ll have a wall that’ll last a lifetime.”
(Well actually, this observer said it after putting away a few beers – but it IS a good analogy).
And that is very nearly that.