Pools of saliva collected around the floors of makeshift home workstations last month, when Epic unveiled their astonishing Unreal Engine 5 tech demo, all photorealistic crags and shrubs - and apparently, all running in real-time on PlayStation 5 kit. The geometry-streaming system underpinning the demo, which allows for more triangles than Pythagoras' percussion section, is known as 'Nanite'. It quite literally sounds like the stuff of dreams.
And, without meaning to be overly cynical, it just might turn out to be. Epic are no doubt being totally honest about their groundbreaking ground-generating code, and they have every right to be proud of it. But can we really say with certainty at this stage that the PS5 will promote such visually arresting rocks? We certainly hope so. It's just that, well, when it comes to video game tech demos... let's say the Emperor's new threads often look a lot less opaque by the time he's wearing them in public.
Or, to put it less idiomatically/gibberishly, tech demos aren't to be trusted. These are consoles at their most beautified, and most unrestrained. Those hyper-realistic sharks? They usually turn out toothless.