Okay, first of all, deflation is a money supply issue, and when. Sou realize that money supply includes credit -- and that credit is the largest part of the economy, then you'll find that yes, we are in deflation here in the US.
Now, what about PRICE inflation / deflation?
Well, as robotics, improved methods, and tech make manufacturing faster, cheaper, and easier, that causes deflation. Likewise, as power over little folks forces their wages down, that makes things cheaper. More slaves (you, me) means cheaper goods.
On the other side of the coin, we are not just at peak oil, we are at peak everything. So as raw materials become harder to come by, that causes price increases.
Incidentally, that may have been how Greenspan or Paulson (I forget which) triggered the bursting of the housing bubble. Until then, they had kept the CPI at a constant price inflation of about 5% singe the '50s. early 2000s, they changed policy in response to the bursting of the tech bubble, to keep the CPI constant at 0% increase. But if things are harder to get, that meas that wages have to fall. But people had taken mortgages on the assumptionof 5% CPI price INFLATION. So when their wages fell, they couldn't keep up. That forced housing prices down, which then triggered massive losses from the investment flippers, who themselves were massively overleveraged, which caused Fannie Mae to go plfft, which triggered the hedge fund leveraged derivitive bets into losses, which caused TARP and the jobless recovery...