What does it take these days to get money from a Texas jury? Not much, it seems; in XTO v. Goodwin the trick was convincing a higher court that you should keep it.
Let’s start with the minefield that is the law of evidence:
- Expert opinion testimony must be based on facts, and sound reasoning and methodology.
- Conclusory or speculative opinion testimony is not relevant.
- An opinion with no factual substantiation is speculative or conclusory.
- Expert testimony based on unreliable data or flawed methodology is unreliable and does not satisfy the relevancy requirement.
- Unreliable expert testimony is legally no evidence.


Co-author Chance Decker
Welcome to the binary edition, where you have a choice: An informative and engaging stroll through the history of the oil and gas business in Texas, or a wonkish and also informative legal analysis.
Semco, LLC v. The Grand, LTD.
Occasionally we visit issues larger than one-off courthouse decisions. Here are a few selected stories on the extent to which fracking contributes to rising levels of methane and, maybe, to climate change. There are conflicting facts and opinions, so decide for yourself. If you find a tilt in one direction, we’re just levelling the field. See the last entry.
Updated for a math infraction, thanks to several astute readers.

Co-author
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