Competing theories
- Some ludicrous theories are that humans evolved from aquatic apes and tears helped humans to live in saltwater.
- Others persist that crying removes toxic substances from the blood that builds up during times of stress.
- More plausible theories are that tears trigger social bonding and human connection.
- Crying signals that there's some important problem that is at least temporarily beyond your ability to cope.
- Tears show others that we're vulnerable, which is critical to human connection.
- Crying is also used in manipulating others.
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