Nobody set it needs to be a magic number. A descriptive constant name will address that. However, a setting in a config file invites tampering, which in turn me

Nobody set it needs to be a magic number. A descriptive constant name will address that. However, a setting in a config file invites tampering, which in turn means more complicated tests to account for that. It might make sense if frequent changes are anticipated. However, not every hard coded constant should or needs to be in a config file.