Check bags are fun. I just make sure there won't be anything illegal in my check bag which is forbidden at a cabin of a plane. Just leaving things like scissors and such out of my carry-on things in order to avoid troubles with some certain airline, y'know.
Anyone who says businessmen deal in facts, not fiction, has never read old five-year projections.
Time travel may be achieved one day, or it may not. But if it is, it should not require any fundamental change in world-view, at least for those who broadly share the world view I am presenting in this book.