Why doesn’t it make a problem for Buddhists to look into the past?

A senior Indonesian-English sworn translator, former licensed personal advisor and analyst in the Indonesian capital markets, former college lecturer in English for Buddhism, Tipitaka translator, senior member of the Indonesian Translators Association and Indonesian Therevadin Buddhist Council, recipient of the Sāsanadhaja Dharma Adhgapaka award given by the Ministry of Religions of the Republic of Indonesia, Buddhist preacher under the same ministry