Jayarashi

(7th c.?) Author of the Tattvopaplavasimha,
one of the only surviving texts of the
materialist philosophical school. One
of the philosophical peculiarities of
the materialist school was that they
accepted only perception (pratyaksha)
as a reliable pramana, or means
by which people can gain true and
accurate knowledge. In his text,
Jayarashi argued against the reliability of
inference (anumana) as one of the
pramanas by refuting the concept of
cause and effect. To make an inference,
such as inferring the result an action
will bring in the future based on the
result it brought in the past, one
must believe that the cause-and-effect
model is reliable.