Having recently experienced raising an infant, let me tell you, getting all my sleep in I was getting what this article suggests would be a viable polyphasic sleep schedule (total of 8 hours per 24 hour period, in chunks of 1-2 hours throughout the day and night whenever the baby slept), but I started hallucinating, got deeply depressed, and felt like I was losing touch with reality. All the symptoms vanished as soon…
Since the polyphasic idea is to decrease the actual amount slept getting 8 hours also is going against the whole purpose of doing it.
I've raised two children, one of them with real sleep irregularities, and neither time did I have anything resembling what the adherents of polyphasic sleep would consider a reasonable schedule.