Margin Evidence https://s-ehrlich.com/ Notes that remember where the sentence came from. en Fri, 04 Sep 2026 09:00:00 GMT Observation vs Inference vs Assumptionhttps://s-ehrlich.com/observation-vs-inference-vs-assumption/https://s-ehrlich.com/observation-vs-inference-vs-assumption/Sun, 19 Jul 2026 09:00:00 GMTAn observation records what was directly noticed, measured, or documented under stated conditions. Primary vs Secondary Sources: A Practical Testhttps://s-ehrlich.com/primary-vs-secondary-sources/https://s-ehrlich.com/primary-vs-secondary-sources/Fri, 04 Sep 2026 09:00:00 GMTA primary source provides original evidence or a firsthand record relevant to your research question. How to Keep a Source Log for Personal Researchhttps://s-ehrlich.com/keep-source-log-personal-research/https://s-ehrlich.com/keep-source-log-personal-research/Sun, 19 Jul 2026 09:00:00 GMTKeep a source log by creating one retrievable record per source when you first consult it.