What a mess this statement is. I have to suppose they wanted to say, "The range is at most 250 yards". By saying "at least" they are allowing that the range may be within 500 yards, or within 500 lightyears, because 500 lightyears is assuredly "at least" 250 yards. Then of course, the "or less" adds nothing, since 500 lightyears is "at least" 1 inch, just as much as it is "at least" 250 yards.
This is what we have to put up with these days.
They forgot to mention that this was one of the largest explosions in recorded history.
Yep. They don’t know how to proof read, I suppose. They just spell check it, and let the computer try to make sense of it.
Not to get to explicit about this, but there are readily available remote control devices that go way beyond those ranges. I am not a bomb maker, nor do I read inspire magazine. But...with a little bit of research, you can figure this stuff out. Clearly these guys are not idiots. Why is anyone surprised they were able to improve on a project in a country with easy access to this stuff.
,we really need to stop thinking these guys are stupid. We need to stop being amazed by what they do. We need to start thinking like them.