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.