Originally Posted by Whiteroom
You dont need to do a double blind test with a different ski, you could duct tape 55g or so of weight to the top of the hollow tech and see how different they feel. That would give you your answer.
^^^^ This. Control for as many variables as possible. Isolate the one you're interested in. Incidentally, since a number of respected brands have tried for a number of years to produce lower mass tips (think Dynastar "bubbles," Fischer holes, Kastle cutouts, Rossignol cascade tips, Dynastar partial caps), and these brands have pretty decent engineers working for them, odds are the idea is based on sound principles. Which make sense to me with my limited college physics. But note it's not the only way to reduce tip deviation; Blizzard and Stockli tend to do just the opposite, with fairly burly tips and shovels that blast through anything.
Trying different approaches to solve a problem doesn't mean something's "marketing bs," y'know. May just mean that at this stage of ski design, progress is small and incremental, so the marketing guys seize on modest improvements to foreground. If you think otherwise, go ski a Rossignol 4S, the world's best recreational ski from a generation ago, and tell me how nothing much has changed...