$NVIDIA (NVDA.US)$ Are you like a shoe shine boy who knows n...

$NVIDIA (NVDA.US)$ Are you like a shoe shine boy who knows nothing unless you invest in US stocks? It is difficult to consider in terms of market size, financial results, PEG, etc. Should you choose a stock that is at risk of being noticed and sharply declining, or a value trap? In any case, it is a very natural common sense that there is no risk-free stock trading.