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No Ever help the buddy move into a new apartment

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on the fourth floor Well it's hard sway work But

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is it possible Of course the human body could do

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amazing things even if it isn't worth a cold Pizza

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are friends Give us in Thanks Now imagine a world

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where all work was the hard sweaty type and thankyou

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Pizzas were nowhere to be found Food stuff of nightmares

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right Well not really Back in the hunter gatherer and

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early agricultural areas fire and muscles where are on ly

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sources of energy Back then they didn't even have elevators

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but on the bright side there weren't really any floors

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either to worry about Well from about two point six

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million bc until about ten thousand b c e almost

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every task required human effort But keep in mind there

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was no internet back then which meant no cat videos

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to be distracted by So we still accomplished plenty of

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things In that time period we migrated out of africa

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and around the world developed languages transitioned toe agriculture built

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the first urban spaces and stop getting eaten by hyenas

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all the time Last one was kind of a big

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deal But it was all based on the energy we

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got from food Early humans a lot of fruits nuts

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and pieces of dead animals They found laying around the

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breakfast of champions there Right Well we got a little

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energy from fire to get way back then Chemical and

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thermal energy where the on ly stops in town Right

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from the beginning though human beings were trying to escape

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the limitations of their paltry energy sources After plenty of

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experimentation and more than a few smashed fingers people figured

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out how to make tools out of stone and tools

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like people who use their energy way more efficiently Why

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shred an animal with our fingernails when we can use

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a sharp rock right Well both options are gross but

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fingernails would take forever and ever to clean well before

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we go feeling too bad for those poor paleolithic people

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in their lumps of rock let's talk more about fire

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cave people couldn't use fire to power stolen refrigerators or

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tvs or anything but it doesn't mean it was useless

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At some point between eight hundred thousand and two hundred

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thousand Years ago human beings mastered the art of building

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A fire which is impressive right Ever tried building a

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fire without any tools Yeah thanks Don't try those survival

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shows If it came down to it we freeze to

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death huddled over a pile of damp tweaks Anyway trees

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spend their whole lives transforming sunshine into wood when we

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burn That would were basically releasing a few dozen years

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or maybe even centuries of stored sunlight As thermal energy

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may think of fire today is something nice and cozy

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that lets us roast marshmallows to the first level of

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roundness But for early humans fire meant a lot more

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They also roasted little wieners Aside from that one of

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the major uses of fire was light A light source

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at night prolonged work hours and kept predators away Remember

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the giant hyenas They were real Oh fire was also

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great is a heat source early humans wouldn't have made

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it through one harsh winter without fire And even with

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fired christmas in the alps couldn't have been fun though

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it does sound like a festive lifetime original movie Well

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early agriculture also benefited from fire Needs some farmland No

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worries Just burn down the forest Well fire could clear

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Unwanted undergrowth let food plants grow and replenish the soils

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with ash While these techniques are currently being used to

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destroy vast swaths of the amazon rainforest but way back

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in the day it seemed like there was plenty of

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force to go around Remember that old oprah thing about

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giving away the cars You know you get some rain

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forest and you get some rain forest hindsight's twenty five

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Anyway fire was also helpful in creating tools Our early

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ancestors eventually unlock new skill levels and learned how to

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use fire to harden the points of their wooden tools

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And last but not least fire was used for cooking

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It expanded the possible range of foods that human beings

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could eat well Tough plans and raw meat became a

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lot more edible after they were cooked And best of

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all it became less likely that eating old raw namath

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would lead Teo you know somebody keeling over mammoth food 00:04:07.508 --> [endTime] poisoning Really

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