Fix link to children languages#actionable_takeaways.

[minor]

voussoir.net/writing/friction/friction.md

@@ -62,7 +62,7 @@ I've never liked using planners or calendars. Partly because having to get a phy
 
 I have been using [Anki](https://apps.ankiweb.net/) to keep up on Korean vocabulary for about one year now. I've learned that the best time to do my cards is immediately after I wake up, while I'm still in bed. Not only are my scores highest at this time, but I'm most likely to get the whole day's cards done in a single session. There is no 'second best' time of day to do my cards -- if I don't do it in the morning in bed, it's a crapshoot as to when I'll get around to them during the day, usually it takes multiple small sessions, sometimes I don't finish until 1 AM, sometimes I don't finish at all and do extra the next day. I only do about 30 minutes each day so it's not even a big undertaking, but once I'm out of bed I've got too many distractions and friction to get around to Anki.
 
-Learning Korean requires spending a lot of time listening to it. Certainly the long-term value of learning the language is very high for me, but on a day-to-day basis the value of any individual listening session is hard to measure. I can't *feel* my improvement on such a short timescale, so individual listenings are unfortunately of somewhat low value. Thus it's necessary to reduce my friction as much as possible. That means keeping the tracks on my phone, using [Musicolet](https://play.google.com/store/apps/details?id=in.krosbits.musicolet&hl=en_US) which gives me a queue (not playlist!) dedicated to Korean, and putting the Musicolet widget on my home screen so I've got a play button right there. I mentioned this in [Are children better at learning languages](/writing/are_children_better_at_languages/#this_isnt_a_defeatist_piece). My current source of friction is earbuds, I wish I could just have it beamed into my brain with no mortal coils to speak of. Those true-wireless bluetooth earbuds seem promising but then you've got the friction of charging them and my experience with bluetooth sound quality hasn't been great, though that might just be from low-quality devices. It would also be nice if Musicolet had widgets for playing particular queues, because the widget now only shows the current queue and you have to open the app to switch them. The next time I get a new phone I think I'll keep this one as a dedicated Korean device with 24/7 airplane mode to save battery and a play button right on the lock screen.
+Learning Korean requires spending a lot of time listening to it. Certainly the long-term value of learning the language is very high for me, but on a day-to-day basis the value of any individual listening session is hard to measure. I can't *feel* my improvement on such a short timescale, so individual listenings are unfortunately of somewhat low value. Thus it's necessary to reduce my friction as much as possible. That means keeping the tracks on my phone, using [Musicolet](https://play.google.com/store/apps/details?id=in.krosbits.musicolet&hl=en_US) which gives me a queue (not playlist!) dedicated to Korean, and putting the Musicolet widget on my home screen so I've got a play button right there. I mentioned this in [Are children better at learning languages](/writing/are_children_better_at_languages/#actionable_takeaways). My current source of friction is earbuds, I wish I could just have it beamed into my brain with no mortal coils to speak of. Those true-wireless bluetooth earbuds seem promising but then you've got the friction of charging them and my experience with bluetooth sound quality hasn't been great, though that might just be from low-quality devices. It would also be nice if Musicolet had widgets for playing particular queues, because the widget now only shows the current queue and you have to open the app to switch them. The next time I get a new phone I think I'll keep this one as a dedicated Korean device with 24/7 airplane mode to save battery and a play button right on the lock screen.
 
 I wrote [gitcheckup.py](https://github.com/voussoir/cmd/blob/master/gitcheckup.py) to check the number of changed files and unpushed commits in each of my important git repositories. The cwd doesn't matter, it always shows me a complete list. I have a tendency to make small or experimental changes that I forget about and go unpushed for a long time. gitcheckup helps me keep my repositories in a clean state by showing me empty checkboxes (the horror!) next to what needs attention [footnote_link].