The current 12-month embargo period is widely disregarded. It is observed by PubMed Central (PMC), but the existence of preprint servers and academic social network sites (ResearchGate or Academia.edu) makes it possible for most authors to distribute peer-reviewed manuscripts at will. While enforcement of the embargo is lax or non-existent, its elimination would have a negative impact on publishers’ cooperation—pushing them to replace so-called “green” open access with author-pays models. The 12-month embargo allows PubMed Central time to prepare accurate and standardized versions of accepted author manuscripts. Requiring immediate access would not eliminate the PMC production time; there would still be several months between first publicat...