Worshipping Demigods ( BG 7.20-23 )

<p class="p1">We see great many masses worshipping various deities in different forms and people do get results from such endeavour.</p> <p class="p1">Are these forms imaginary or real ?</p> <p class="p1">What is the science behind it ?</p> <p class="p1">What is the purpose ?</p> <p class="p1">Does it all lead to same goal ?</p> <p class="p1">What did Lord Krishna speak to Arjuna on this topic ?</p>