[Honestly, if he'd been given the chance, Steven would've kept asking on about the movies. But the way their shoulders are pressed together for a moment is enough to drive any follow-up questions from his mind, and next thing he knows, they're back on the pyramid model. He doesn't mind talking about that either, though!]

Nah, they used mortar, actually. Mostly made with gypsum, but with bits of wood ash and straw in there too. Not all that durable, but it wasn't really used to stick the blocks together anyway. It was more to fill up any gaps. Hide the imperfections, you know. 'Specially in the inner chambers, that was important. Have to make the burial chamber look nice, you know? And most archaeologists reckon the inner structures were constructed in a hurry, while they could take their time with the outside and really make those last blocks perfect. [He pauses, then chuckles sheepishly.] Which works for me, you know. I made a proper dog's dinner of the first few blocks, too. Once I've slapped some mortar on there and closed the whole thing up, nobody will be the wiser. Except for you, of course.