(This thread should be retitled how many times can Apdst be wrong?)
Profit is not always liquid. If I trade my barrel which I paid $5 for for a bike that was worth $15, I have made a profit of $10. Is my bike a liquid asset? Not really. If I exchange for an item that does not have a readily available market, can I easily turn that item into cash?
Furthermore, if you have a deferred exchange, you still have profit because of the commitment between the parties. But you do not have liquid assets.
If I trade something for an annuity in which's value exceeds my item, I have made a profit. But it's annuity and therefore not a liquid asset.