Regarding availability, it had always seemed a bit strange to me that people would estimate words that start with those letters as more frequent than words with them in the third position. A list of rhyming, similar sounding words (vane, mane, cane, lane, line, fine, sine, mine, bone, cone, hone, lone, for example) seems at the very least just as easily recalled, just as available as a list of words with the same starting letter. Maybe this is just a poor test of the heuristic (I believe there are several other demonstrations of it in JUU).
Regarding availability, it had always seemed a bit strange to me that people would estimate words that start with those letters as more frequent than words with them in the third position. A list of rhyming, similar sounding words (vane, mane, cane, lane, line, fine, sine, mine, bone, cone, hone, lone, for example) seems at the very least just as easily recalled, just as available as a list of words with the same starting letter. Maybe this is just a poor test of the heuristic (I believe there are several other demonstrations of it in JUU).