[projektfu]

When we count pills, we use a simple device that has a flat part and a channel to count into. A hockey-stick-like spatula moves pills into the channel. The excess is poured back into the bottle the opposite way and the channel is then emptied into the bottle.

I count in multiples of 3 so I don't lose my place. The last number is unique for every 30.

https://share.google/VshUpiSioUh6rLg4q (Image link)

[TimedToasts]

Can you explain the counting a bit more?

I interpreted it as: For every three pills I put into the channel, I add +1 to my internal count.

"The last number is unique for every 30" means... if you have a mental count of 13, you have 39 pills channeled? I didn't quite follow...

[niloc132]

If you count by threes, the ones place is unique until you pass each multiple of 30 - 3, 6, 9, _8, _1, _4, where was I? I hadn’t made it to 30, ends with a 4, must be 24. 27, 30, 33, _6…

Serves as a sort of checksum, as long as you know roughly how many you have and just the last digit.

[projektfu]

Couldn't have described it better myself.