Hi, If there has been a civilization (aliens etc.) that is some 2400 lightyears away from our world that has the same technology we humans have, would it be possible for them to observe Plato lecturing in Academia ? If this is not possible, is it because the shortcomings of the technology (if so what are they ?) or is it fundamentally (eg. absorption of light, light source issues, issues regarding the earth's atmosphere etc.) not possible (if so why) ? I am curious especially about the fundamental side actually.