@MatthewHernandez The existence of earthquake data is implied by the formation of the theory and by the mentioning of no detection in temperature increase. Plainly, being unable to detect something probably means there is data to show a lack of that something.

Because the theory predicts there will be an increase in temperature even though nothing has been detected, the theory does not explain fully explain the data.

@GojoLebronVegetaBatman The economist responds to her colleagues point about lowering rates to stimulate the economy by stating there is no need, but then concludes her argument by saying there is therefore no reason at all that we should lower interest rates further. We don't know if this is true.

She could be correct about her colleagues argument: lowering interest rates isn't needed to stimulate economic growth. But that doesn't mean there is no reason at all to lower interest rates.

@willdhorn I think you're understanding of the info given by stimulus is missing something. Not only do we know that losing --> /jennifer playing, but we also know the contrapositive: jennifer playing --> /losing.

@JeffreyRamirez Also, "all" is an indicator word for an introduction to a sufficient condition, meaning whatever it's referring to is going to be on the left side of the arrow. In this case, "all microscopic organisms" is the sufficient condition and is therefore going to be on the left side when you diagram.