Last week I published an analysis on ethereum which you can find on below link:
https://www.publish0x.com/paradoxal-investment/ethereum-technical-analysis-with-fibo-mas-xnnqjlo
I finished this analysis with a guess:
We are above 8 & 21, we can expect a rise until $1400 (MA 55) but since it's a strong resistance I dont expect it to get over.
So let's see what happened in 1 week:

As you can see, 55 MA (aqua blue) worked as a resistance for 2 days, but on the 3rd day, this resistance was broken at 1370 and the instrument quickly saw the points with 1600s in couple of days. That's a big rise for few days!
So analysis tool (FIBO MAs) is working great and it still managed to get big portion of rise.
But my guess was wrong. The conclusion we will draw from this mistake should be the following: The price is what matters! Not the hypothetical lines in our heads!
If we are planning our investment according to these lines then we should stick to them and if the price crossed over a line we should put our predictions aside and take the necessary action!
How do they say, I never lose, I either win or learn! ;)