[zellyn]

"You can practice."

This.

If there was one thing I could tell all applicants at Google, it's to read up on the process, and practice. There is a huge amount of information out there[1]. I feel sad interviewing really smart, capable people who could have breezed through with just a few hours of review and practice.

[1] eg. http://courses.csail.mit.edu/iap/interview/materials.php

[jarek]

I imagine it must feel horrible interviewing smart people who would do great at work but whom you are unable to hire due to arbitrary hoops set up by your own company.

[bishnu]

This is true. However, the alternative is worse (hiring someone unqualified)