I do a lot of advanced teaching and it is amazing the number of pilots who do not use the correct techniques for climb/descent entry and level, most common is that they get to TOC, level off and immediately set cruise power, with the result that the aircraft then takes an age to get to cruise speed and they also spend ages trying to trim it out, the acronyms might be seen by some as needless, but for most students, correctly applied, they WORK.