 In spite of there being little settled agreement in philosophy about trust, there are thankfully things we can say for certain about it that are relevant to deciding when it is warranted. The trustor must be able to accept that by trusting, they are vulnerable usually to betrayal. Also, the trustee must be competent and willing to do what the trustor expects of them and may have to be willing because of certain attitudes they have. Last, in paradigmatic cases of trust, the trustor must be able to rely on the trustee to exhibit this competence and willingness.