Pie in the sky = A fanciful notion or ludicrous concept, broadly or extravagantly humorous, absurd, inviting ridicule..
A very good article at the Financial Times.
Here’s what is happening: The press writes a lot about designer babies (sample of some articles I’ve found about designer babies) and some people read that and think that parents will be able to choose the color of the eyes and the intelligence of their babies…. And that is totally absurd…
Nobody knows the genetic roots of a higher IQ or the gene for beautiful eyes. And on top of that who knows the correct definition of beautiful eyes? What I consider a beautiful eye is different from another…
The issue that matters to me is that embryo screening to avoid inherited diseases is safe. We were extremely lucky to find Sofia.

Hype gave public ‘pie in the sky’ view on designer babies
By Clive Cookson, Science Editor
Published: February 1 2006 02:00 | Last updated: February 1 2006 02:00
“Des-igner babies are not around the corner and probably never will be. There is a great deal of hyperventilating about this in the media – and it is unreal. We heard repeatedly from scientists debunking the idea of designer babies.”
“It’s just not going to work,” said Prof Richards, a medical geneticist. “The notion that we can go along to a clinic, look at a number of embryos, and choose one that’s going to be a beautiful blond with a brilliant academic record is pie in the sky.”
The birth of “saviour siblings”, deliberately conceived to act as stem cell or bone marrow donors to save a brother or sister threatened by an inherited disease, would be a very rare occurrence because the chances of success were low, said Prof Richards.

Read the complete article via FT here.