What is the LITMUS test for any TRUSTWORTHY team?

The following insight shared by Simon Sinek in his book The Infinite Team beautifully summarizes the litmus test that any trustworthy team faces. For the feeling of trust to evolve the members have to feel safe in order to trust each other..

When we work on a TRUSTING TEAM, we feel SAFE to express VULNERABILITY. For the feeling of TRUST to develop we have to feel SAFE expressing OURSELVES.

Adopted from Simon Sinek’s book the Infinite Game