 This perfectly balanced Eye of Harmony then served as the power source for their civilisation as well as their time machines.At some point in their history the Time Lords interacted with the civilisation of the planet Minyos, giving them advanced technology (including the ability to "regenerate" to a limited degree, by rejuvenating their bodies when they grow too old).This met with disastrous results, (which is said by some to be the reason the Time Lords adopted a philosophy of "non-interference").