there is no harm in ——
• the specified course of action may not be guaranteed success but is at least unlikely to have unwelcome repercussions.
• "other stores may be offering similar deals—there's no harm in asking"
no harm done
• used to reassure someone that what they have done has caused no real damage or problems.
• "there's no harm done in this case but you really must be chary of giving invitations to people we don't know"
