Should be avoided (BG and SB)
Appearance
Bhagavad-gita As It Is
BG Chapters 7 - 12
BG 10.8, Purport:
Only a fool would consider Kṛṣṇa to be an ordinary man. A Kṛṣṇa conscious person should not be bewildered by fools; he should avoid all unauthorized commentaries and interpretations on Bhagavad-gītā and proceed in Kṛṣṇa consciousness with determination and firmness.
BG Chapters 13 - 18
BG 18.38, Purport:
Happiness derived from a combination of the senses and the sense objects is always a cause of distress and should be avoided by all means.