Technique is a generic term, comprising scales, arpeggios, chords, double notes, octaves, legato, and the various staccato touches as well as the dynamic shadings. They are all necessary to make up a complete technique.
The More Technique the More Practice
Why do pianists who have more technique than many others practise more than these others?
Why have the Rothschilds more secretaries than I have? Because the administration of a large fortune entails more work than that of a small one. A pianist's technique is the material portion of his artistic possessions; it is his capital. To keep a great technique in fine working trim is in itself a considerable and time-absorbing task. And, besides, you know that the more we have the more we want. This trait is not only human; it is also pianistic.
How to Improve the Technique
Should I endeavour to improve my technique by trying difficult pieces?
You should not confine yourself to pieces that come easy to you, for that would prevent all further technical progress. But beware of pieces that are so difficult that you could not play them—in a slower tempo—with absolute correctness. For this would lead to the ruin of your technique and kill the joy in your studies. Play pieces that are always a trifle harder than those you have completely mastered. Do not emulate those who say: "I play already this or that," without asking themselves "how" they play. Artistry depends ever upon the "how."
[2. POSITION OF THE BODY]
Do Not Raise the Piano-Stool Too High
Are the best results at the piano attained by sitting high or low?