Re: Educational giveaway | guess first Bitcoin Block in 2020 [9.5 mBTC]
Since all the science has already been used, and assuming that the range in the current entries is reasonable, I went for an approach similar to how the Magic Number for Legendary Activity is generated
Most creative way ever existed 
Well, the 2016 block adjustment will happen at 608832 blocks and it's very possible that we may have some quicker blocks than the actual average of 10 minutes. Your prediction is 78 blocks higher than the average one.
Good luck.