Keep in mind Georgiou is showing knowledge of information out of her "time" on a few occasions so far. That might give you a clue.
RAMA
RAMA
The blinking is done in a specific pattern, as are the key presses. I’d find it easier to press a few keys than time the blinks. Like I say, the input is different because the machine is different. I’m not saying you can hit the same key, but a few keys if you know the sequence... sure. That’s not a big difference. The big difference is that it’s an exploit in a system that only a few people know about. Everything the machine sees or hears is an input that needs to be processed. I’d have preferred something logic based or something recursive that they’d have to process causing a shut down, but I guess they went with what they could think of. As a representation, it’s okay. Blinking is a bit of a stretch, but not anything (to bring this to a close with my original point) as silly as silly killy Tilly being the XO.
I’m Mr. ‘Defend the honour of Discovery’ but that’s indefensible. It can only be a sensible thing to do if the Admiral finds out and goes mad at Saru. If it’s a plot point used as a device to bring about legitimate change, then that’s totally fine. If it’s to get Tilly in a position of power, I hate it. That would be the first major choice in the show that I actually hate.