Thanks, I think that Steemit is the closest thing we have to a collective consciousness in our time. It is decentralised, organises the posts of thousands of people into a coherent stream without any centralised server according to protocols that are defined and changeable by the stakeholders, and backs up all its content in the blockchain perpetually.
These aspects parallel a collective consciousness, which would organises and merge the thoughts of its collective members into a single stream of consciousness, through a decentralised network of servers, according to emergent member defined parameters, and backup the uploaded thoughts, memories, and personalities of its individual members to a perpetual storage.