Quantum computing is the latest technology hype cycle.With shares up by a jaw-dropping 5,100% over the last 12 months, Rigetti Computing (RGTI -3.01%) exemplifies the life-changing potential of stock investing. If you bought $10,000 worth of shares of this speculative tech company last October, your position would now be worth over half a million dollars. After a rise of that magnitude, potential new investors must be left wondering if they should jump on Rigetti's hype train or wait for a dip. Let's dig in ...