bots trading can be a short play over a long period,new rules are creating game play changes a tax on low volumes would probably create more volatility--in the end it all gets down to ethics if they are looking to restore confidence.
the sharemarket creates wealth from thin air supposedly backed by real assets ,and makes people feel secure because they are rich today,tomorrow might be a different tale.
electronic trading means markets will never be the same growth story of 50 years ago,its a casino where you pit your skill against other players and yes you can make it if you know when to fold em and walk away
