I have seen people on Slashdot complain that the scientists weren't taking the Sun into account, but maybe that was you, too.
Let's look at a time line.
1. Climate scientists: Discover climate has changed dramatically several times ... You: not born yet
2. Climate scientists: Gather mountains of evidence of such changes ... You: are born
3. Climate scientists: Discover that humans are affecting climate ... You: blissfully unaware that climate even changes
4. Climate scientists: Gather mountains of evidence that humans affect climate .... You: learn in school that the climate has changed dramatically several times. Knowledge transmitted indirectly from climate scientists.
5. Climate scientists: Warn the world that humans are affecting climate ... You: "It is just *assumed* that any change must be our fault, that the Earth is static and doesn't ever change unless we do it."
So yeah, you're probably the only person in the world to take the time to write that sentence, but not take the time to think about it.