Bill, “resetting my clock” Haha! You’re completely right that cyanobacteria react to the sun as an internal biochemical timer. But when we look at the actual biology of how fungi function alongside the exact wording of the text, there is a world of difference between a metabolic reaction to light and something functioning as a literal sign.
Notice also that on Day 4, the text deliberately avoids naming the sun and moon. It simply calls them the greater light and the lesser light. The Hebrew word used here for lights (me’orot) can actually refer to the light itself rather than the physical source. It’s simply describing a greater amount of light during the day and a lesser amount of light at night. Furthermore, Genesis says these lights are set in the firmament. In my remapped flat earth imagery model, the firmament maps to the lithosphere—the Earth’s solid crust. So, we aren’t talking about looking up at space; we are talking about these different wavelengths of light physically interacting with the ground to navigate the terrain.
This is exactly where the distinction between cyanobacteria and fungi shines. Through an elegant biochemical loop, cyanobacteria effectively measure daylight hours by keeping tabs on their own energy levels. Studies have shown that when scientists bypass light completely and simply feed these bacteria sugar in a dark lab, their internal clocks can be fully synchronized by the feeding schedule alone—proving that metabolism, not light itself, is the primary driver. Their relationship with light is fundamentally metabolic; they are essentially consuming it as fuel. They aren’t looking at light as an external sign to navigate their surroundings.
Fungi, on the other hand, use light strictly as information. Fungi are completely non-photosynthetic organisms. They don’t eat light, yet they possess highly advanced, dedicated photoreceptor networks. Remarkably, fungi can detect a full spectrum of separate light inputs, including white, red, and blue wavelengths, using specialized proteins like phytochromes (for red light) and the White Collar complex (for blue light). Because they don’t use light for fuel, they use it purely for navigation right there in the soil. They use these different wavelengths of light as an external compass to figure out where the surface is, steering their underground threads through the crust and triggering the release of their spores out into the wind.
Back on Day 1, light was introduced, but it was completely diffused through a thick, global primordial haze. The light was there—which is all cyanobacteria need to run their metabolic and chemical rhythms—but there wasn’t a clear difference between day and night light levels actually reaching down into the soil. You cannot have an ot (a beacon or distinct sign) until you have an observer equipped with an information network designed to read it.
Day 4 marks the exact moment this light variation hits the lithosphere as a sharp, clear signal, precisely matching the era when complex eukaryotic fungi arrived on the scene with the specialized, non-photosynthetic navigational equipment necessary to read those wavelengths on the ground. The clock didn’t need resetting; the light just finally became an active roadmap for an observer who could actually read it!