亦即係話，真實嘅事實係B，當加上因果關係呢個條件之後，可以產生出A有理由相信B嘅原因。但係，經過呢個修正嘅外在主義解釋之後，仍然面對住反例嘅挑戰：
In other words, the real fact is B, and when the condition of causality is added, a reason to believe B can be generated. However, after this revised externalist interpretation, it still faces the challenge of counterexamples: