He then prayed to his guru, and when the guru promised to give him what he wanted, Vyasa asked that what he has written down as Vedas be followed by people. Thus, Vedas in the current form have been written by Vyasa, and will be followed till the end of Kali Yuga. In effect, Vyasa obtained a 5000 year lease for Vipra Brahmins. These Vipra Brahmins, in turn, introduced massive distortions into the varna system. Just as thier ancestor had done before them, the Vipras went about altering every text in sight to give superiority for themselves.
Thier tools depend on the yuga, as described below.
However, this age of Kali is coming to an end. Vipras are gradually losing thier hold over the people. At the arrival of Kalki, they will be so poor and powerless as to not have enough to eat and wear. This process is evident in India, where there is an uprising against the upper-castes, mainly vipras. In addition, just before the arrival of kalki, Vipras will lose control of Sringeri Mutt, and Vishwa-Karmas will get control of it.