if( list.size() < 3 ) return;
// System.out.println("i: " + inflectionPoints );
final double value = getNewest().getValueDouble();
final TimedEntry lastEntry = getIndex( list.size() - 2 );
final double last = lastEntry.getValueDouble();
final double delta = (value - last);
// changing enough to care?
if( Math.abs(delta) < changeThreashold ) {
//System.out.print("low: " + delta);