> EDIT: To piggyback this logic, why don't we have more 'spares' of other organs. Why is the redundancy factor only built into kidneys?

Its likely to do with trade-offs between the resources the human body needs to grow and maintain vital organs and also how feasible having redundancy is.

e.g. lungs are perhaps semi-redundant, obviously having one lung = much reduce physical capacity and isn't great, but we do have two.

My physics might be a little off - but I think its counter productive to have two hearts? Human digestive system already has lots of failures in its complex system so doubling up would probably mean more room for errors.

Two brains? Forget about it.

I'm no expert but I believe the military strategy of the time was to disarm/demilitarize/occupy as necessary to ensure that a hostile enemy was unable or unlikely to be aggressive. So for the allies it probably would have been unlikely to accept a truce because there would be this forever issue of worrying about aggression.

Germany had already shown themselves to not only be unappeased but also unpredictable - its not inaccurate that Hitler was shown to be delusional and foolish in his decisions. Germany should of surrendered much earlier but instead sent children to defend Berlin because Hitler was that adverse to any admission of defeat.

Hitler had a weird perspective on Britain, he kinda liked the UK and probably would have considered a truce while I imagine he continued to push Russia - but again hard to trust.

Scruffy the Tugboat reboot

Does that lemur look super buff to everyone else?