i am gonna post this kind of guessing, because i am curious that what will ever happen when the block is just halved and/or it is just happened. anyone?

i got an idea that to trade more with bitcoin to gain more popularity/demand of the bitcoin.

After the block is halved the block reward will be of 12.5 BTC.
The effect on price is unknown. I think same level or lower for some time, but don't know how long. Days, weeks, months?
Eventually price will go above $800 and attack the previous ATH of 1200