Filtering out viewers before they click
I make videos about maths and computer science topics. In the past, it hasn't always been immediately clear that the video will involve maths. From my analytics, I can see that the moment the first formula appears on screen, a lot of people stop watching, like 20%.
The advice I got was to align my title and thumbnail better with the content. So for my last video, I did just that: the word formula is in the title, the thumbnail is digital-looking wireframes. But still, there is a massive dip (~15% this time) when the first formula appears. My subscribers have almost double the watch time, probably because they know what to expect. Is it just inherent with science topics, or can I do something more about it? I just want the right people to click on the video and not be disappointed.