But other than today's hint of an intentionally weakened system, little evidence has ever emerged to support speculation, and the researchers' suspicions were not universally endorsed.
It also supports direct speculation in the value of currencies, and the carry trade, speculation based on the interest rate differential between two currencies.
This finding "does not support speculation that Mr. Foster was wrapped and moved in a carpet."
The finding supports speculation that silicone breast implants can lead to severe illnesses.
The wording of the announcement supported speculation in Johannesburg newspapers this afternoon that the police had uncovered evidence of an assassination conspiracy.
There is little evidence, the Administration says, to support speculation that the trial was a response to a political threat.
We don't see anything on the horizon to support such speculation.
"This discrepancy supports speculation that antioxidant treatment affects early but not later stages of plaque development."
There are, however, no data to support such speculation.
There was no evidence to support speculation that women had become more likely to have accidents.