A topic I am a world expert on, since I was still working then at the Thesaurus Linguae Graecae (which had digitised all that writing), and I’d written a post about it on my inactive Greek linguistics blog, six years previously.
I’ve got enough arrogance in me that all my posts since have been as confident as that one—though it took me a month to answer another question, and I didn’t become prolific until 2016.
My first answer outside of my core competencies (Byzantium, music, language, Greece, Australia) was Nick Nicholas’ answer to What culture first created books as they exist today, with spines and bound into covers?, 24 Nov 2015.