[…] verb serialization, probably arising out of paratactic conjunction plus equi-delation, represents the only plausible means by which early language could have been broken out of single-clause structure.
- Bickerton (1981), Pag. 275

The aid supplied by verb serialization in bridging the gap between monopropositional and multipropositional sentences had nothing to do with semantics. Verb serialization simply made available structures more complex than had existed hitherto–structures that added the possibility of NVNVN to the previous NV and NVN structures.
- Bickerton (1981), Pag. 277