Where was I?
Um. Oh, yes. Latex and Lyx. I’ll get back to that in a moment.
In the meantime, here’s a nice illustration of the difference between competence and performance, interpretability and grammaticality, and the stem and stern of a banana:
“My whole adult life, I never knew the right way to open a banana… and now you do, too.”
(hat tip to Pharyngula)