When you create a chart using constant volume bars as a replacement for time, tick or range bars, the variable aspect is completely eliminated. If you have the ability, set up a chart using them and see for yourself. Don't take my word for it.
Volume leads Price. Always. However, far more information exists within a Volume Pane than simply the height of a specific Volume Bar. The sequences of Volume which exist across every fractal, and on every time frame provide the 'points' in time where one trend ends and another begins. These sequences repeat - over and over again - across all markets - every day. - Spydertrader
Here is a marked chart from the 30th for the Euro FX (6E). This was marked for the overnight trades and then the pre-market trades going through open. This is a 343 & 49 CVB Chart. The left chart I simply use for strength and the right for trade decisions and entries. I prefer the Euro FX in the Summer because the liquidity is stable. The eMini S&P isn't consistent again till Fall. I have a chart from yesterday too, I'll try to find.
60 minutes experienced by a person on a moving plane is not the same as 60 minutes experienced by someone standing stationary on the ground. However, I don't know if this is the inconstant nature of time that he was referring to.
Google Time as a physical property. Big subject so here's a 2 min intro... http://www.youtube.com/watch?v=F7M6LqEAukg