I didn’t even know the word “semasiographic” then, but when I was 13 or 14 I developed a partially semasiographic writing system (as the aliens in Arrival used) with the idea that it could work cross-culturally for the basics.

Looking back on it, it was pretty good. I discovered nothing new of course, but divorcing phonology from meaning seemed natural to me at the time.

However, I did not learn to see the future.