Bicycle innovations of dubious efficacy

"Crank wrote:

The main fundamental difference provided by Cranktip pedals is that whilst the oval ring concept is limited by the length of the crank arm, the Cranktip pedal simply increases the actual overall crank arm length to provide greater torque regardless of the chain ring being oval shaped or round. Also and most importantly, it achieves the greater tract and resulting torque whilst maintaining the identical pedal crank distance and foot speed that the same crank arm would normally experience when fitted with traditional pedals. To simply quantify the difference, the Cranktip pedal provides greater leverage and torque beyond the normal length and leverage of a crank arm to which it is fitted, whilst the oval chain ring concept provides varying amounts of torque within the length and leverage of a crank arm.