A pipedream is an unattainable or purely fanciful hope or idea. You know, like the hope that when you upgrade one thing on your computer you won't discover your printer, working practices, hair colour and country of residence are all incompatable and need to be changed before you can do so much as open an email.
Compared with that, becoming a successful novelist seems a perfectly reasonable plan.
I did know the meaning of the word pipedream, but not its origin. It comes from the visions or hallucinations experienced by people smoking opium pipes. Obvious when I think about it - presumably I never had before.
Here's an opium poppy, I grew this year. Even without smoking them they raise my spirits.
Do you have any pipedreams, or perefectly reasonable plans, you'd like to share?