Here is a joke that my 8 year old twins found very funny when I told them: A man enters a craft chocolates shop and asks if they could make a chocolate model car for him. - “Sure, no problem” - “And can it look like the VW Beetle that my dad had?” - “Nice idea, no problem at all.” - “And can you make it so that the chocolate doors open and you can see the interior detailed in chocolate, like with a plastic model car? Same with the bonnet and trunk?” - “that will require some planning, but I think i can manage.” - “And i would like the wheels to roll, and if i turn the steering wheel then the wheels should turn as well?” - “Mmmh that is fiendishly difficult in chocolate, I will need to carefully plan and experiment…” - “And finally, can you make it so that the chocolate windows can move up and down when you turn the handles?” - “Man this is insanely difficult. But give me 3 weeks and i’ll try my best.” Three weeks later the man returns and indeed there is a lovely chocolate VW Beetle model on display. The chocolatier proudly shows it in all its glorious details: interior, wheels, steering wheel, windows, everything works perfect, and after the demo he asks, “shall I put it in a nice gift box?” - “No need, I will just eat it here.”