Idol worship started as a symbolism , as a representation of concepts. You capture the image of the idol or lingam and you close your eyes. you start focusing your good energy on this image in your mind which is good energy stored as memories in your brain and being retrieved triggering sadbhavana. This is the theory of idol worship. It is a technique and based on where you are on the spiritual path you can transition from faith in the external to what is internal . invoking these good memories in your brain is the goal of the satvik mind. The truths of life are simple. our ancestors on the sadhana discovered this by experimenting on themselves. Let us make sure this knowledge is not lost to our future generations in our rush towards creating wealth. The time is now. discover the power of love and the science of tantra !