Take, for example, network measurement research: https://conferences.sigcomm.org/imc/2021/accepted/ https://conferences.sigcomm.org/imc/2021/accepted/ One of t

Take, for example, network measurement research: https://conferences.sigcomm.org/imc/2021/accepted/ https://conferences.sigcomm.org/imc/2021/accepted/ One of those papers is about counting the scale and scope of online political advertising during the 2020 election. How does one reproduce that study? The 2020 election is long past, and that data isn't archived anywhere other than what the researchers have already collected. This is a pretty simple empiracal data collection tastk, but you can't just re-measure that today because that study is about a moving target.