Trust is a harder problem than basic understanding / semantics, because it requires basic understanding / semantics as a prerequisite. You might trust your ban

Trust is a harder problem than basic understanding / semantics, because it requires basic understanding / semantics as a prerequisite. You might trust your banker with your money but not your personal life, and trust your friend with your personal life but not your bank account. Therefore, you there must be explicit and implicit degrees of trust that are specifically trust "for some intention" or at even just "for some specific purpose." And then, you must trust that the meaning of any promise or guarantee is equivalent between parties.