It theoretically can, but no one knows if it will. If you want a more precise answer, I suggest asking your nearby fortune teller.
Seriously--but I guess that's what this section is all about, guesswork.
I'd certainly say bitcoin is on track to hit $20k at some point this year, and I'll bet the halving (or at least the anticipation of it) will be a driving factor. But as I've said before, I'm not hoping that bitcoin starts going haywire around May and I think $20k by the end of the year would be a more reasonable target. 2017 was a fun year for crypto, but the hangover was hell on wheels and I'd prefer to avoid a repeat of all that.
I expect a dump if we get close to 20.
I hate that word
dump in the context of bitcoin, but I know what you're saying and I agree. Lots of people would start cashing out if bitcoin hit a new ATH--it's understandable, of course, but the subsequent drop could be massive.