When's the last time a design concept actually turned into a design? Concepts are essentially waste-of-time pornographic images. Look at the old design concepts that claimed they'd be here by 2009. To quote a favored director: "Total fucking bullshit."

The last thing I saw that remotely resembled an interesting "concept design" was when Apple told a bunch of people they were making an iPod phone with multitouch, a full-featured web browser, cover flow, and on-the-fly Youtube access, but that wasn't a concept design, that was a product unveiling, because Apple doesn't do concept designs because Apple thinks they're bullshit as well.