[The Cajun]

loop quantum gravity posits that space-time itself is made of quantized, discrete bits, in the form of tiny, one-dimensional loops.

Think that if something is one dimensional, it's a lot tinier than tiny :)

[Boogieman]

One dimensional means a single point. I’m not sure how they are getting a “loop” out of a point, since a loop would, by definition, be at least 2 dimensional.