push for access to prior knowledges, prior research, current scientific consensus
open access isn’t always equitable and often requires authors to pay for it
Green Open Access is usually free and has licensing dictated by publisher
Gold Open Access incurs an Article Processing Charge (APC) - extortinate prices, published on an open licence (usually CC BY), but some venues only use this kind
some good irony, an article on open access publishing ending up behind a registration wall