Fibonacci EMA

I was reading something and found the trading system for H1 and M30 timeframes.

Why Fibonacci?
Some people say that 8, 13, 21, 34, 55 are Fibonacci numbers.

System is simple:
- signal for enter - EMA8 is crossing EMA55.

Confirmation on Parabolic with default settings on the current timeframe (H1 or M30) and on M15 as well.
- exit on crossing EMA8 and EMA21.