Yesterday I went to my writing group, where two of my fellow writers had submitted pages, and the rest of us told those (un?)lucky two what we thought.
Sometimes we agreed, which is always reassuring, both as a writer and a critiquer--it means there's probably something legitimate in the criticism.
And sometimes we didn't. At all. Or sometimes we offered wildly different potential solutions to perceived problems. Like mine was "maybe more dialogue" and someone else's was "if she passed out from pain, that would explain things"-level different.