very cursorily, apparently this paint reflects ~99% of light and a decent mirror will reflect about the same. white surfaces scatters light randomly while mirro

very cursorily, apparently this paint reflects ~99% of light and a decent mirror will reflect about the same. white surfaces scatters light randomly while mirrors reflect it incidentally (initially thought white might somehow ‘even out’ reflectivity across wavelengths vs. a mirror, but quickly realized that makes no sense). so if you could sufficiently flatten a white surface so that light bounces off it uniformly, it becomes a mirror.