The only problem with the argument against it based on baryonic asymmetry is that if you cut a knot in half and look at one half of it, there's an entire other

The only problem with the argument against it based on baryonic asymmetry is that if you cut a knot in half and look at one half of it, there's an entire other half you aren't seeing. With this in mind, this idea is particularly fun if paired with something like Neil Turok's CPT symmetric universe (i.e. the other side of the knot).