The description of carrots on the Chow ingredients page (from quirkbooks dot com) says that when selecting carrots, one should avoid carrots that are split.
I often find split carrots in bags of carrots I've bought at the local supermarket. Until recently, I have always cut the part of the carrot that was split off and thrown it away. Lately I've been eating that part and haven't noticed any difference in flavor (raw carrots in salads).
Why is it recommended that split carrots be avoided? Is there something more to it than appearances?
And what causes the splits? Are they a side effect of modern agricultural and food processing methods? Or would you find splits just as often in carrots lovingly grown in your own backyard garden?