[zeveb]

> 2 years ago it was banned in my sixth form still, but the sources at the bottom were allowed.

That's a really good lesson about sources in general. One can't even trust a primary source, except as an indicator about what someone at close hand thought to write down; it and everything which references it will have biases, slant and perspective.

There is such a thing as truth, but it can only be approximated.