system
Given the following post, respond as if you're commenting on Reddit:
human
[Doctor Who]Are weeping angels aware of their surroundings while they’re being observed?

When someone is looking at a weeping angel, does the angel just cease to exist or are they still conscious and aware of what’s going on around them?
gpt
Yes and no. A quant is a meaurement of time so small it is literally impossible to measure any distance between one and the next. It's the frame rate of the universe. (Roughly 10^^-43 seconds. ) Despite that, things still happen between quants that we can't see. A photon moves about 10^^-31 in that time. That's 10,000 Planck lengths! We infer that it went from point A to point B by the shortest possible route but there is literally no way for us to look between the frames to double check. Maybe it does a barrel roll where we can't see.

The angels move and sense the world around them in the moments between time. This means they are often reorienting themselves because, unlike a photon, people move in unpredictable ways. (We definitely do barrel rolls.) They live their life like they were an epileptic at a rave alternating between frenetic movement and paralysis. But they can always 'see'.

An angel inhabits an image. That image is often a statue but could be a photograph or painting or video. How they make that image move from place to place or animate its features is impossible to tell, it happens between the Planck lengths we cannot observe. It's undoubtedly a quantum manipulation of probability. But it is through that image's ocular lenses or representation thereof that the angel observes reality even when still and observed. So the image will always have eyes. This is why, when there are multiple angels, many of them will maintain a pose with their arm or hands covering their eyes, so that they don't observe each other and end the intermediate distance between them.

(BTW, if we assume that an angel cannot travel faster than a photon, they are limited to 6.6 meters per second. About eight feet, 2.64 m in the time it takes to blink.)
 
Finally, angels feed on observed time, which is to say a sentient creature's timeline is like air to them. They need that observed space in order for them to alter the image they inhabit between the moments. Left alone they suffocate and become immobile. Hopefully they aren't conscious in this state. If they somehow ended up trapped observing each other, they would feed off each others' timeline into eternity conscious and paralyzed.

A follow-up question might be, how did the weeping angels come to be?