Why there wasn't a Tungsten T4

According to a review on Brighthand.com, the reason why there wasn't a Palm Tungsten T4, it's for the same reason you seldom see product numbers -- or hotel room floors in Las Vegas -- with the number 13. In much of Asia, the number four is considered bad luck of the worst kind. Turns out the word for four sounds a lot like the word for "dying" or "death." It's pervasive enough that an urban myth persists despite contrary medical evidence that there are more heart attacks at work on the fourth, fourteenth, and twenty-fourth of the month, so some stay home on those days. Thus it's more common to see major product numbers skip from three to five. Canon, the camera company, took their PowerShot G3 straight on to G5 for the same reason, and Palm, Inc. itself skipped the Palm IV in favor of the Palm V.