For instance, from a spiritual perspective one (individual) plus one (god) equals one.
Edit: (though I haven't tested that one yet)
You don't have to, you exist.
You are so right, the way that we human beings look at evolution and creation is from what we know (through education) or what we may have seen (through experience),
my point being is we are very young on the Intelligent evolutionary stage, both spiritual and physical. They say they have found 200 planets in the last couple of years using the telescopic wobble method. Out of that, the one most recent, could possibly have life. But this is only a tiny fraction of the cosmos. If we found a planet that had gone through possibly the same sort of evolution that we possibly have and yet were on a small universal time scale, of say 80,000 earth years more advanced than we were, blimey, that would be something else. It is where we also look at biological life from our perspective, other parts of the cosmos, you may even have different gases in certain star systems, so you could easily have inelligent life in different forms. Size is also another factor that does not really fall into any equation when it comes to intelligence. Just on earth, Study a fly, watch it clean its wings and its back legs, study an elephant cooling its back with water from its trunk. We were born with the gift of voicebox and hands and feet with a more advanced brain, being God's finest creation on earth yet, i'm sure that could change.As Humans we are young, but as Willamena says, we should always, without doubt, keep our hearts and understanding open to Intelligence, whether on the evolution or creation front, the Universe itself is very old, to keep ones mind open, is a must.