I am the editorialist for the June 2015 long contest. I have gotten many feedback about the poor quality of the editorials (and rightly so). I know many of you were eagerly waiting for the editorials and were disappointed because it was not detailed enough. I am sorry for letting you all down.
Unfortunately, due to tight time constraints (aka thesis deadline) I could not spend as much time for the editorials as I would have liked. That, and the fact that a couple of topics were either entirely new to me or I had never used them before (including, yes, FFT).
I will try to improve the editorials as and when I get time. If you have any improvements, you can also edit the editorial or comment there.
I will make sure I will have enough time if/when I become an editorialist again.
Again, sorry for the let down.