Even if there's no hard measurable rule on the limits of what we consider consciousness, that doesn't mean that definition includes anything that exhibits chemi

Even if there's no hard measurable rule on the limits of what we consider consciousness, that doesn't mean that definition includes anything that exhibits chemical reactions. Ultimately it's a bit of an inprecise human concept. The boundaries of what fits in there might be somewhat unclear, but we definitely things that intuitively are (humans) and aren't (plants, rocks) in this set.