"Fanciful thinking" refers to the act of believing or imagining things that are not based on reality. It describes thoughts or ideas that are more imaginative or whimsical than practical or logical. Full definition
Of course, this approach, which may be helpful at the second - grade level or which may be fanciful thinking which will not stand up, is open to question biblically. (religion-online.org)
But don't fabricate stuff; Wenger has an 18 year consistent record of doing nothing whatsoever to appease the fans — pure fanciful thinking if you imagine MO was bought just to quieten the likes of you down. (justarsenal.com)
By CLAIRE NEESHAM There is no shortage of hype and fanciful thinking about the coming information age. (newscientist.com)