Share your insights or perspective on the financial matter presented in the input.

Is real (physical) money traded during online trading?
I asked a followup question on the Islam site. The issue with Islam seems to be that exchanging money for other money is 'riba' (roughly speaking usury). There are different opinions, but it seems that in general exchanging money for 'something else' is fine, but exchanging money for other money is forbidden. The physicality of either the things or the money is not relevant (though again, opinions may differ). It's allowed to buy a piece of software for download, even though nothing physical is ever bought. Speculating on currency is therefore forbidden, and that's true whether or not a pile of banknotes gets moved around at any point. But that's my interpretation of what was said on the Islam site. I'm sure they would answer more detailed questions.