The current rules for how power and fluid resources are drawn from different sources (e.g. via the multiple inputs of a transformer or pump, or via the mutiple building inputs of a base) make it very difficult to set up a reliable redundant resource supply.
Say you have wells 1 through 3 connected to the respective inputs of a pump, and your base's minimum needs exceed what a single well can provide. Then the pump will always draw from well 1, making it impossible to accumulate any water reserve in its inbuilt tank, and well 2 may also struggle to accumulate a reserve due to also being tapped constantly, while well 3 will eventually be sitting there idling with a full tank, its production capacity ceasing to be utilized. Should a meteor then destroy well 3 during the night, you'd have only well 2's meager reserves to draw from. And should well 2 also be destroyed, you'd be left with a well that had never accumulated any reserves ever.
If instead consumers would draw from all inputs simultaneously (ideally even prioritizing inputs that currently have a well-filled storage), all wells would get the opportunity to accumulate reserves, and even if you were to lose 2 wells to a meteor strike, the remaining well would still have reserves to last you for a bit.
Essentially the same scenario applies to electricity. It's a bit less of an issue there since you can throttle the output of a battery to force it to accumulate a reserve, but it means you will have to hurry and change battery settings if any of your battery banks are taken out, so that the remaining batteries can compensate for the lost supply.
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