As a trader, you observe a significant interest rate differential between JPY and USD, with Japanese interest rates near zero and US rates higher. How would you assess the potential for initiating a JPY/USD FX carry trade? Please elaborate on the role of Uncovered Interest Rate Parity (UIP) theory in your assessment, as well as the key assumptions, risk factors, and potential pitfalls you'd need to pay particular attention to when engaging in such a trade.

你作为一名交易员，发现日元（JPY）与美元（USD）之间存在显著的利率差异，例如日本利率接近零而美国利率较高。你会如何评估开展一项日元/美元套息交易（FX Carry Trade）的潜力？请你详细阐述在评估过程中，无抛补利率平价（Uncovered Interest Rate Parity, UIP）理论扮演的角色，以及进行此类交易时需要特别关注的关键假设、风险因素和潜在陷阱。