I have finally perfected my time portal. We can open a small window, of no more than an hour’s duration, to any time and place in the past that we can specifiy relative to today and to the Earth’s surface. Unfortunately, we can do this but once before the flux capacitor burns out.
This is a window, not a door. We can see, but we can’t visit or interact.
What should we use our one opportunity to observe? Can we pick something that will make us enough money to buy new flux capacitor components? Or shall we selflessly take the hit and document of great historical (but non-profit-making) event via videocam?