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.