I am disgusted whenever I see phrases like "...it is easy to show that...", "...after some simple algebra we arrive at...". I think of them as signs of laziness. Write your technical articles clearly and don't waste people's time by forcing them to guess your oh-so-clever proofs. Dictionary of useful research phrases is a nice piece that will help you uncover author's mindset:
It has long been known = I didn't look up the original reference.
It is hoped that this study will stimulate further investigation in this field = This is a lousy paper, but so are all the others on this miserable topic.
mp3: İsmail YK - Bomba Bomba