They haven't read/watched The Day of the Triffids. Seriously, I know that I am not alone in that if a mysterious blue/green flash in the sky were to occur the last thing I would do would be run out to look at it and take a photo. I thought everyone knew that the result of that was that the next day you woke up blind and hunted by carnivorous alien plants.
It has been confirmed that it is not triffids, the following video is therefore confirmed safe to watch. Probably.
It has been confirmed that it is not triffids, the following video is therefore confirmed safe to watch. Probably.