Because of the material potencies of the Supreme Lord, mundane philosophers are perpetually arguing about which came first, the chicken or the egg. By the influence of the modes of goodness, passion and ignorance, different philosophers are attracted to different views; and by the influence of the material atmosphere created by the Lord, these philosophers perpetually disagree with one another. The Supreme Lord Himself, however, has given the clear explanation. As stated in Śrīmad-Bhāgavatam (6.4.31) :

yac-chaktayo vadatāṁ vādināṁ vai vivāda-saṁvāda-bhuvo bhavanti kurvanti caiṣāṁ muhur ātma-mohaṁ tasmai namo ’nanta-guṇāya bhūmne

“Let me offer my respectful obeisances unto the all-pervading Supreme Personality of Godhead, who possesses unlimited transcendental qualities. Acting from within the cores of the hearts of all philosophers, who propagate various views, He caused them to forget their own souls while sometimes agreeing and sometimes disagreeing among themselves. Thus He creates within this material world a situation in which they are unable to come to a conclusion. I offer my respectful obeisances unto Him.”