How reliable is AI trading?

Could you elaborate on the reliability of AI trading in the cryptocurrency and finance world? What factors determine its trustworthiness? Are there any specific instances where AI trading has proven to be more effective than traditional trading methods? Or conversely, have there been notable cases where AI-driven strategies led to unexpected losses? Also, what measures should investors consider before relying on AI for trading decisions? Lastly, what role does human oversight play in ensuring the soundness of AI-based trading systems?