Snap judgments like "love at first sight" or "instant hate", ... (Para. 2)
love at first sight: to fall in love with someone the first time you see them
The phrase "at first sight" means your first encounter with someone or something:
Nothing is ever quite as good or quite as bad as it looks at first sight. 任何事都没有乍一看那么好或者那么糟糕。
instant hate: the hate that occurs immediately you see someone or something