I had not thought about having the sunscreen leech into the water. Thank you for educating!

Ugh, I hate that this resonates.

Does medication help with this?

I was recently diagnosed from a neuro-psych. Similar process of many hours of testing (~5h). My friend was also diagnosed recently from a psychiatrist through question answer, but no formal cognitive evaluation measure. The amount of clarity I got from the neuro-psych in terms of cognitive function and my specific circumstances was significantly more helpful than what my friend got from the psychiatrist.

After all the formal testing, I was given a thorough 17 page report including a breakdown of each aspect of cognitive functioning, any applicable disorders (with recommendation for therapy to investigate further and confirm), next steps, and treatment and coping mechanism recommendations. My friend was given a broad diagnosis of unspecified ADHD with no additional information.

If you are able to afford the neuropsych eval, it is well worth it.

https://engineering.fb.com/2015/05/04/core-data/under-the-hood-facebook-s-cold-storage-system/

This is an article from 2015 where Facebook/Meta was exploring Blu-ray for their DCs. You’re definitely right though. Tape is key as the longest term storage.

Super cool, blew my mind! I would love to see it in operation. The logistics from the machine side + the storage heuristics for when to store to a disc that’s write-only sounds like a really cool problem.

There are also techniques where data centers do offline storage by writing out to a high volume storage medium (I heard blueray as an example, especially because it’s cheap) and storing it in racks. All automated of course. This let’s them store huge quantities of infrequently accessed data (most of it) in a more efficient way. Not everything has to be online and ready to go, as long as it’s capable of being made available on demand.