‘Even if your conscious brain were kept alive after your body had died, you would have to spend the foreseeable future as a disembodied brain in a bucket, locked away inside your own mind without access to the sense that allow us to experience and interact with the world,’ Curtis told The Conversation.

‘In the best case scenario you would be spending your life with only your own thoughts for company.

‘Some have argued that even with a fully functional body, immortality would be tedious. With absolutely no contact to external reality it might just be a living hell.