3 ms·
That is not DRM. That is shoddy craftsmanship, poor quality, etc. Or planned obsolescence. I guess selling Math books with a 15 year lifespan is bad business.
by armandososa 15y ago
That is not DRM. That is shoddy craftsmanship, poor quality, etc.
Or planned obsolescence. I guess selling Math books with a 15 year lifespan is bad business.