Bitcoin is designed to only ever have 21 million bitcoin.
The software which created bitcoin, was written to only allow 21 million bitcoin to be printed in over 100 years.
No one can ever print any more bitcoin.

21 Million
This is called the scarcity hardcap, a hard coded maximum number of bitcoin, which can ever be coded.

Value Preservation
The main purpose of this hardcap was Value Preservation
"One of the most important concepts behind bitcoin is that it is designed to not lose value with time. Instead it becomes more valuable over time."

Discussion
The money you save for retirement, is actually a storage form of the time and energy you spent working and earning in when you are young, so you can have money to survive when you are old. So that money must retain it's value. Anything which reduces it's value, reduces the value of your saved time and energy. We should all agree that is wrong and we should try to stop reducing the value of money, or save our time and energy in something else.the value of your money must not be reduced by the government printing or issuing more money.
Inflation increases the number of your countries currency in circulation, and also reduces the value of your countries currency in circulation. It reduces the value of your current and future money, thus reduces the value of your time and energy saved as money.
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Inflation means the number of dollars issued by the giovernment goes up, but the value of those dollars goes down.
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So the value of your stored time and energy also goes down.
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This means that the dollars you work for, can be printed by another man, and this reduces their value.
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This is why bitcoin's founder said, no man should work, for what another man can print.
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Because this allows someone to reduce the value of your stored time and energy, your savings in money.*
Bitcoin: fix the money, fix the world.

In the first article, I wrote this paragraph:
Protecting Your Saved Time and Energy (Store of Value):
In this paragraph I wrote this discussion:
Money like US Dollars represents your saved time and energy.
Humans only have so many years to live, so every dollar saved for the future represents something that can never be recovered: time and energy spent working.
The value of US Dollars is eroded by inflation, which makes everything cost more each year. If an item cost $100 last year and $105 this year, the dollar lost 5% of its purchasing power, meaning your saved labor is now worth 5% less. Over ten years, a 5% yearly drop reduces the saved value of your saved labor by 50%. This money is your stored time and energy and it is being devalued. You are working for money. The money is the storage form of your time and energy spent working. Inflation reduces the value of your stored time and energy every year.
This is why bitcoiners often say: No man should work for what another man can print.
You work for money.
It is the storage form of your time and energy.
If another man can print money, he devalues the money.
This is the equivalent of devaluing your spent time and energy.
Bitcoin is not reduced in value by money printing.
Bitcoin does the oppositte when men print money, it gains in value.
Unfortunately, in every country of the world, the government prints money every year.
So in every country people work for money, which loses value every year.
Unfortunately this means that every man, in every country, is working for money, that another man can print.
Assets
Assets like gold, stocks and bonds gain in value as money loses it's value.
Assets are available to every man, in every country, and men in every country buy these assets to preserve the value of their stored time and energy, because money fails to do this; maintain it's value.
But it's hard to buy things you need like food, water, and shelter with assets.
It's hard to break off a pice of gold, a piece of a stock or bind, or a piece of a house and give it to someone for bread or milkd.
Bitcoin fixes this...
Bitcoin has been the best performing asset , gaining more value over time than any other asset since its creation. P
Bitcoin protects the value of your stored time and energy saved time and energy.
Bitcoin is also used as money, and you can buy food, water and shelter with bitcoin.
No man should work, for what another man can print.
No man can print bitcoin.
Bitcoin, the storage form of your time and energy, which doesn't lose value every year, instead it gains value.
Bitcoin can be subdivided easily into small pieces called Satoshis, so it can be used as money.
Bitcoin is increasing being accepted at the point of sale for food, water and shelter.

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