What effect does a harder surface have on blood splatter?

A harder surface tends to absorb less of the kinetic energy of the blood droplet upon impact. This results in a greater degree of splatter when compared to softer surfaces, which can absorb some of that energy and result in less dispersal of the liquid. Instead of pooling into a single stain, blood hitting a harder surface is more likely to break apart into smaller droplets, spreading the blood over a wider area. Thus, the premise that a harder surface decreases the amount of splatter does not align with the principles of blood dynamics observed in forensic science. A more accurate observation would be that harder surfaces tend to increase the amount of splatter produced. Therefore, the answer that suggests a decrease in splatter is misleading in the context of how blood behaves upon impact with different types of surfaces.