This quote from Ursula K. Le Guin's The Left Hand of Darkness encapsulates the pervasiveness of prophecy and prediction throughout human culture. It highlights a universal human tendency to seek knowledge of the future through diverse and often supernatural or technologically advanced means. The reverence for gods, spirits, and even machines underscores how deeply ingrained the desire to understand what lies ahead is in our collective psyche. The phrase "Human Family" suggests a shared experience across cultures and epochs, revealing that this craving transcends borders and time.

From a broader perspective, this reflection challenges the reader to consider how we, as humans, construct meaning and order amidst uncertainty. Utilizing mystical or technological voices for guidance mirrors our internal reliance on both faith and empirical data to navigate an unpredictable world. Moreover, the mention of computers 'speaking' about predictions beautifully juxtaposes ancient beliefs with modern digital or algorithmic forecasting, pointing to a continuum rather than a dichotomy between old and new.

This blend of spirituality and technology calls attention to how interpretation and trust play vital roles—not just in what predictions are made, but in who or what delivers them. Are gods and spirits mere metaphors for our ancestral hopes and fears? Are computers merely advanced extensions of our quest for certainty? Le Guin subtly prompts us to think about the sources from which we derive knowledge and how those sources influence the narratives we create about our destinies.

In essence, the quote fosters introspection about human nature's resilience, imagination, and enduring desire to pierce the veil of the unknown through any voices that might offer insight, whether divine, ethereal, or artificial.