bitcoin               
                                        
                                          
 bitcoin  is  a crypto  coin, crypto here 
 meaning  "hidden", because this money is 
  invisible, intangible (yet still real)! 
 this is  a symptom of it only living  on 
 the  internet - in  fact, if you were to 
 remove a bitcoin  from the mainframe, it 
     would immediately die and become     
                worthless.                
                                          
 it  works  like  this: if you make  your 
 computer  create  a  lot  of  heat, it's 
 rewarded  with  bitcoin,  as a  token of 
       gratitude from time's arrow.       
                                          
 then every  other computer has to sign a 
 document  stating that  those coins  are 
 actually  yours.  you can then send them 
 to  others, generating  a  new  document 
           for everyone to sign.          
                                          
 and  because you're knee  deep now,  you 
 have  to  sign  a   lot   of   documents 
 yourself, and keep  track of  who signed 
 what,  and look  for  forged signatures, 
 and  probably forge  a  few  yourself... 
                                          
 also,  in  the   end  it  doesn't  work.