Please spare me from this discussion. It's nothing more than a distraction attempt. Read up on break away gap.
Breakaway gap: Sometimes the price doesn’t return to fill the gap for many months or even years — if ever. When the fundamentals of a security change dramatically, why would market participants sell it back down to the level it was before the big event? Conditions have changed permanently and so has the price of the security. If a company has invented some new must-have product, the new higher stock prices may not be the right price, but the old prices based on the old conditions aren’t right, either.
How do you know whether a gap will be filled? If it’s a breakaway gap, it probably won’t be filled — at least, not in the near future. If it’s a common or runaway gap, it might get filled or it might not. You need to look at other indicators (such as momentum to confirm whether a price move is at risk of going backward to fill a gap).