blank https://www.abc.net.au/news/2017-09-25/why-do-we-forget-peoples-names/8981020
https://www.reddit.com/r/explainlikeimfive/comments/vdose4/eli5_what_happens_in_the_brain_when_you_draw_a/?utm_medium=android_app&utm_source=share

old software https://www.reddit.com/r/explainlikeimfive/comments/u5w0zj/eli5_why_does_old_software_get_buggy_when_it/
https://www.quora.com/Why-does-old-software-get-buggy-when-it-hasnt-been-updated-for-a-while-Shouldnt-it-have-the-same-amount-of-bugs-as-it-was-when-that-version-was-released

bird wings https://engineering.mit.edu/engage/ask-an-engineer/can-humans-fly-like-birds/
https://www.reddit.com/r/explainlikeimfive/comments/v6l11k/eli5_why_is_it_not_possible_to_build_birdlike/?utm_medium=android_app&utm_source=share

cup https://www.reddit.com/r/explainlikeimfive/comments/vdyg9k/eli5_if_yeti_can_make_a_cup_that_keeps_water_cold/
https://www.scientificamerican.com/article/stay-warm-with-thermal-insulation/
https://www.teachengineering.org/activities/view/cub_energy2_lesson02_activity2

births https://blogs.worldbank.org/digital-development/counting-uncounted-11-billion-people-without-ids
https://www.reddit.com/r/explainlikeimfive/comments/v590ro/eli5_how_do_we_know_there_are_around_7_billion/?utm_medium=android_app&utm_source=share

washing machine https://www.reddit.com/r/explainlikeimfive/comments/vgf3of/eli5_why_do_the_glass_doors_of_washing_machines/
https://www.yankodesign.com/2020/04/16/this-front-load-washing-machines-door-slides-inwards-to-save-space-in-small-homes/#:~:text=In%20the%20event%20that%20your,user%20behavior%20comes%20into%20play%E2%80%A6

bathtub https://hellogiggles.com/beauty/happens-stay-bath-long/
https://whatifshow.com/what-happens-if-you-dont-leave-the-bathtub-for-a-week/#:~:text=You'll%20start%20to%20notice,skin%2C%20all%20along%20your%20body.

houses https://www.apartmenttherapy.com/living-in-100-year-old-house-lessons-36708753
https://www.reddit.com/r/explainlikeimfive/comments/vgk51n/eli5_how_are_houses_that_are_well_over_100_years/