I agree that there should have been more focus on the data received from orbit and long-distance telescopes, but let's keep in mind that humans are desperate at this point. None of these planets were slam-dunks for human settlement, and their best hope was that there would be some small slice of one of these planets that could be adapted for human use.
Is it possible that a planet with no dry land could have been their best option? Sure. They might have been able to create some man-made islands (by shifting dirt) and eventually even grow crops. It depends upon the content of the water, the composition of the dirt, the type of atmosphere, and what tools/materials are available to help.
Is it possible that a planet with a lot of ice and no apparent breathable atmosphere--at their landing site--could have been their best option? Sure. The ice might not have been year-round in some parts of the globe, and there may have been some planetary quirks hidden from long-distance scans.
Neither of those planets would be ideal, but, depending upon the planet's resources and a lack of dangerous elements, one of them might have been a lot better than any of the candidates. We should also keep in mind that there may have been technological changes (between now and these expeditions) that would make colonization of one of those planets more realistic than we might think.
Is it possible that a planet with no dry land could have been their best option? Sure. They might have been able to create some man-made islands (by shifting dirt) and eventually even grow crops. It depends upon the content of the water, the composition of the dirt, the type of atmosphere, and what tools/materials are available to help.
Is it possible that a planet with a lot of ice and no apparent breathable atmosphere--at their landing site--could have been their best option? Sure. The ice might not have been year-round in some parts of the globe, and there may have been some planetary quirks hidden from long-distance scans.
Neither of those planets would be ideal, but, depending upon the planet's resources and a lack of dangerous elements, one of them might have been a lot better than any of the candidates. We should also keep in mind that there may have been technological changes (between now and these expeditions) that would make colonization of one of those planets more realistic than we might think.