I've been wondering...In the keynote I noticed Tim Cook is wearing the Apple Watch much higher than I wear watches (typically I wear watches below my ulna, closer to my hand; Cook is wearing his watch farther up his wrist proximally). The Fitbit Surge with pulse sensor says it is more accurate when worn farther up the wrist proximally. The Surge is an inaccurate POS, but I wonder if the Apple watch is inaccurate too in pulse sensing/caloric burn/etc, will we get some sort of "You're wearing it wrong" response similar to Antennagate?