a little offtopic... about CD

Hello, do_se Guaranteed service life, subject to all storage conditions and operation, for stamped CDs = 50 years... For self-written ones, I don’t know... But how Practice has shown that if a disc is recorded at a speed higher than 16x, then 50% will cease to be read normally in a year or two... This is from personal practice, moreover, practically, regardless of the blank manufacturer.