It's a great question. In areas where you have other geoscience information, where there's some historical drilling, say, or GSC mapping, you can calibrate your data versus known hard points of information and extrapolate it. In areas where you know absolutely nothing, certain types of interpretation will be extremely accurate. Certain details in the data won't be, and you'll need alternate information, but the information is always accurate and can always be continually updated and integrated as new information becomes available. As you learn more about the physics, the rocks in those areas, the more accurate your ability is to review the data and understand the geological significance of the measurements.
Evidence of meeting #10 for Natural Resources in the 41st Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was technology.
A recording is available from Parliament.