If an 'experiment' trying to compare a C and an Ada team resulted in the C team creating a new CASM (C Ada Subset Macro) language that was better than either C or Ada, then we'd surely like to hear about it. If it was better than C but worse than Ada (or the opposite) then it should prehaps replace whichever it beat, and if all three were in a dead heat then it's evidence of 'no difference' - at least for that application domain and set of programmers. Clearly such an experiment, especially with a 'Western Electric effect', and across multiple apps and programmer sets, is not something to be done definitively by a few folks, even at a large company. Even non-experimental collection and analysis of data on past projects is a big job. But if we're looking at a likely DOD-wide, or nationwide, or world-wide, benefit on the order of $10**8 or 9, then it's well worth a *substantial* investment.