Jason : Mom, I am investing in cryptocurrency currently.
Mom : Is it something like bitcoin, can you show me the coins you own?
Jason : I can only some you many digits of numbers.
Mom : Then, what can you buy with one coin?
Jason : Must see which day.
Last month, I can buy one extra large pizza.
Last week , I can buy one I-Phone X.
Mom : Wow value increase that fast. My phone got some problems recently, can you buy me a new phone?
Jason :Can you wait until next week? Because I only can buy you one egg for you to cook tonight with my coin.
Mom :.........
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