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.