“Responses to someone’s vulnerability largely seem to depend on how others perceive that person beforehand. If she appears strong and capable before showing vulnerability, people are sympathetic; the vulnerability is humanizing, like that time Jennifer Lawrence tripped on her way to accept the Best Actress award at the 2013 Oscars. But if the person doesn’t seem competent, people are repelled; she really does seem like a mess, nothing beautiful about it.
The pratfall effect can be especially pronounced in the workplace, where, in America at least, there’s been an overall push for people to open up and be “authentic.” But if you haven’t established your competence first, showing vulnerability can damage your credibility.”