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To see whether what we are observing is something that is credible as a pinger representation, where we are. >> bill nye, as a science person, you want a controlled experiment, so to speak, to make sure that they are on to something and see where they come in. would you recommend that as well? >> well, if we have the resources. but as an engineer, i would say, if you have this datum from a couple of years ago where the air france pinger changed frequencies at great depth, it's likely this one did too. and with all the errors, it's very reasonable the pinger would change frequency like this. bu...

Because of the pressure of the ocean, the depth, the age of the batteries, it can change the transmission level. do you concur? >> well, there's an easy way to find out. i would suggest that we do an experiment as part of this investigation by dropping new working pingers into this part of the ocean, and measure the characteristics, the frequence, and the variation from one to another, to see whether these agree with our observations. in other words, what i'm saying is, let's have a real reference in this part of the ocean, and to see whether what we are observing is something that is credible...