Really, you’re going to quote a comedy website/image? It also even depends on what they mean with “dangerous”. If they mean dangerous for the passengers (which is a viable assumption since how many deaths are caused by hot air balloons excluding the persons traveling with the hot air balloon?) this could even be a true graph. So hold you “offended” feeling and just laugh at the joke at hand.
Really, you’re going to quote a comedy website/image? It also even depends on what they mean with “dangerous”. If they mean dangerous for the passengers (which is a viable assumption since how many deaths are caused by hot air balloons excluding the persons traveling with the hot air balloon?) this could even be a true graph. So hold you “offended” feeling and just laugh at the joke at hand.
I agree that you are correct. It’s a joke. And it’s about safety of the USER.
However, xkcd is a “brainy” and “technical” web comic. The author assuredly has a rigorous definition for anything like the axes in this comic.