Fire lay or dump and light?

Should we practice building a teepee fire lay, a lean-to fire lay like in the Ritter PSK drawing, or just dump some tinder in a pile light it and then add wood as needed until we get a good fire going? I have read that you should get 10 armfuls of wood for a fire to last all night. Then what are you going to do?
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Thermo-regulate, hydrate and communicate.