Next, next version, just commit everything to working memory, as in one's brain. To help with this, simply tell others what you are doing and give them updates. Practice can be gained by doing things such as shopping without a list. Hacks can also be used, so a list of code fixes can be called 'updating the specs', even though it is a list of things to do.

As for pen and paper, writing things down is a way of committing todos to working memory, the paper does not have to be referred to, just the act of writing means that it gets noted.

Forgetfulness is a feature. If it wasn't important and it gets forgotten, then forgetfulness has worked.

Joking aside, todo lists, in whatever form, are rarely going to be forever solutions, and, depending on the task and who you are working with, the solution is going to vary.

What is fascinating is working with someone that has all the tools for the day job and to work on another project, for instance DIY. They might have all of these fancy project management tools for work, but do they use them for renovating the house?

Of course not! They are back to either pen and paper or just working memory.