Okay, I'm no engineering or techno expert, but if every transaction is recorded on the Blockchain, how come it can't be used to track the criminals or to pull our Bitcoins back? This is the perpetually confusing part of the Bitcoin/Blockchain thing for me. Just saying.
The blockchain is only a ledger; it isn't controlling the flow of transactions but is only recording it together with a timestamp. People can always follow the taints of every transaction but knowing that an address doesn't relay any personal information to its owner whatsoever, it's not that easy to trace/track criminals. Also, bitcoin transactions are irreversible; once it's done, it's done unless a double-spend is created before the transaction is confirmed.
You'd be amazed how the crimes made using fiat currency overshadow that of bitcoin's. Take
this for example, even the most respected banks tend to launder money through established connections. Not only that but they were successful in moving billions of dollars without ringing some alarms
