Status Updates From Galloping with Light - The ...

Perfect! The space-time concept (both classical and relativistic) and event intervals are absolutely clear to me now. Though the internal links to Figures would be helpful, I had no trouble with reading the diagrams this time. :)
Not so perfect: I wish I had read this book more than a quarter of a century before it was written. An irrational wish, unfortunately. :/

Just rereading explanation of Minkowski's space-time and event intervals. Should be careful now so as not to 'jump' into a wrong frame of reference again, e.g. onto a light beam again instead into a car ... :))