Imagine 10,000 years in the future. Two archaeologists are digging a site, and they find the remains of human bones. They take those remains to the lab, perform tests on them, and try to reconstruct the habits and lifestyle of that human. Say those bones belong to me. They are trying to find out my story, how I lived, what I ate, where I traveled, etc. Once they find all the info they need, they toss it into a museum where they store all other such ancient human remains they find. I was essentially one data point to them in trying to understand how humanity evolved over time. Or I can also call myself a “datum”, the singular form of data, literally one piece of information to solve a bigger puzzle. Honestly, I don’t need 10,000 years to become a datum. I am already a part of several datasets people use these days to study many things. So for that objective learner, I am already a datum. Now let me get to how I got the dumb part of it. I have had an interesting and eventful life so far...
Imagine if person B’s blood pressure reading depends on whether person A receives the blood pressure medicine in a randomized controlled trial. This will be violating Stable Unit Treatment Value Assumption (SUTVA) SUTVA states that the treatment received by an individual should not influence the outcome we see for another individual during the experiment. I know the initial example sounded absurd, so let me try again. Consider LinkedIn A/B testing a new ‘dislike’ reaction for its users, and the gods of fate chose you to be part of the initial treatment group that received this update. Excited after seeing this new update, you use this dislike reaction on my post and send a screenshot to a few of your connections to do the same, who are coincidentally in the control group that did not receive the update. Your connections log in and engage with my posts to use this dislike reaction, but later get disappointed as this new update is not yet available to them. The offices of LinkedIn are tr...
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