I would say that we use “blind faith” to refer to those times when we “step out”and believe something without any reason why we should in the natural, but we “know that we know” that we have received a word to “act.”
For instance, Abraham was willing to sacrifice his son Isaac because God told him to even though it didn’t make sense. Elijah believed fire would erupt on his woodpile when he called it down from heaven even though he had drenched it with water.Each of these men trusted the greatness and power of God and simply believed that God’s promises are true. So when God said to sacrifice Isaac, Abraham trusted that God knew what he was doing and his job was to simply obey.
The “true” life of faith means we truly know our God. It means we can hear his voice and dismiss other voices. It means we understand God’s character and promises. If that is the case we may be called to do grand things like Bible heroes of the past. However that won’t only be blind faith. Instead, that will be faith in God…..with our eyes wide open.