Dawid + Fe(SCN)3

Remember Dawid? He was very excited being blipped before and actually asked me to take the photo of him again. So here it comes. Dawid making his favorite reaction... this is Fe(SCN)3 - substance which is sometimes used for moderately realistic blood effects in film and theater.

We must trust to nothing but facts: These are presented to us by Nature, and cannot deceive. We ought, in every instance, to submit our reasoning to the test of experiment, and never to search for truth but by the natural road of experiment and observation. - A. Lavoisier, Elements of Chemistry