goes to the lenght?

[juliana0403]

HI... I don't understand the underlined part.. Please explain to me...

Thank you..

A common pattern in many socieities provides for a periodic relaxation of the

rules of conventioanl behavior. In some societies this goes to the length of

letting down all sex barriers, even to the relaxing of incest taboos.

[Anglika]

It goes as far as dropping barriers to sexual behaviour that is not usually regarded as acceptable.