After updating to Mac OS Catalina, an issue occured where some files could only be deleted via terminal (rm -rf) command, however, dragging the file to the Trash Can, made a trash sound, but the file was not deleted and immediately reappeared on the desktop, also, it could not be overwritten. Files could also not be copied onto the Desktop and trying to save a file had an error message <Cannot save file "Desktop">, even though "Desktop" was a folder and not a file. All permissions were set properly and deleting them via command line was not an issue. Restarting the computer and cleaning temporary files did not get rid of the issue. 

The problem was resolved with a "Safe Boot", using the Shift key pressed while starting the Mac. This must have deleted some weird files during the start-up, which created this strange behavior. 

According to the article 

Rising Seas Will Erase More Cities by 2050, New Research Shows

in the New York Times, much of Southern Vietnam could be flooded by 2050.

For a writing speed of less than 2 GB per hour of video to Tesla Model 3, one would need an average writing speed of about 0.6 MB/s with peaks much higher. USB flash drives writing speeds are slower than reading. In principle, USB2 standard can go as high as 60 MB/s and USB3 standard as high as 640 MB/s, however, most actual drives cannot even get close to those limits. The writing speed also depends on file size. Sequential read is also faster and usually what is listed. 

Apparently, according to UserBenchmark, the SanDisk Extreme Pro 128 GB reaches around 260 MB/s write speed.

The SanDisk Ultra Flair USB 3.0 128 GB is advertised as up to 150 MB/s, and in tests has about 100 MB/s writing speed.

For lower price, you tend to get improvements of reading speed at the expense of writing speed. For exmaple, SanDisk Extreme 64GB and Samsung FIT 64GB have similar reading speeds (200 MB/s), but writing speeds of 180 MB/s and 60 MB/s, respectively. The SanDisk is 3x faster at writing large files at twice the price. 

The report Making Room for Success by the College Futures Foundation says in the Los Angeles and Orange Counties by 2030, demand for CSU/UC college students is about 101,000, while the planned capacity is only 85,000 students.

 

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