"muddled ideas" is a correct and usable phrase in written English.
You can use it to refer to ideas that are chaotic, disorganized, or confused. For example: "The professor was frustrated by her students' muddled ideas about the lesson topic."
And no doubt his responses to Greta, when she didn't know things or muddled her ideas, were tinged with the same, not ungenerous humor.
Mr Bush has muddled up two sensible ideas: the short-term need for a fiscal stimulus to pep up the faltering American economy; and a long-term fiscal reform namely shifting the tax burden away from investment.
But seen again, after reading the full text of his mission statement, it's clear how far he falls short, and how muddled the movie's ideas really are.
I have no idea what muddled thinking, what misdirected good intentions, what pettiness, what insecurities go through the heads of the good people who made these choices, but they have done a disservice both to their regions and to architecture in the country as a whole.
Unfortunately the idea gets muddled with other topics.
This film was treated to some hooting and booing on its first screening in Cannes; it is a very odd, singular piece of work: not the visionary masterpiece it assumes itself to be and muddled in its effects and ideas.
He cut a long, rangy figure, and inside his beautifully chiselled head there was an astonishing mix, even muddle, of ideas about philosophy, psychology, nature and humanism.
"Re-cycle," for instance, about a novelist transported to a horrific fictional world of her own creation, is a rich, gloriously unstable muddle of ideas, alternating between a provocative melancholia and goofy, arbitrary-seeming computer-generated fantasy, and ending on a note of tantalizing self-reflection.
Accountability arrangements for policy ideas and implementation are muddled.
