Why is important that the Furies witness Percy and battle?

The Furies witnessing Percy in battle is crucial as it underscores the stakes of the conflict between gods and demigods, highlighting the tangible consequences of their actions. Their presence adds a layer of intensity and danger, emphasizing the moral and ethical dilemmas faced by Percy and his allies. Additionally, it serves to connect the mortal realm with the divine, illustrating the fateful intersection of human choices and supernatural forces. Ultimately, this encounter reinforces the theme of destiny and the ongoing struggle between good and evil.