Standard mirrors are only ~98% reflective (https://en.wikipedia.org/wiki/Mirror#Reflectivity https://en.wikipedia.org/wiki/Mirror#Reflectivity). For example, "i

Standard mirrors are only ~98% reflective (https://en.wikipedia.org/wiki/Mirror#Reflectivity https://en.wikipedia.org/wiki/Mirror#Reflectivity). For example, "infinity mirrors" will fade as the number of reflections increase (https://physics.stackexchange.com/questions/305329/are-infinite-reflections-between-two-mirrors-really-infinite https://physics.stackexchange.com/questions/305329/are-infin...).