Like is said in the abstract, the designers of risc-v have the advantage of 3 decades of hindsight. So they could avoid stuff that was considered good back in t

Like is said in the abstract, the designers of risc-v have the advantage of 3 decades of hindsight. So they could avoid stuff that was considered good back in the day but history showed was more a disadvantage, like delay slots ot register windows. The cynic in me likes to think that existing proprietary isa's keep adding new instructions partly to keep customers on the upgrade treadmill. If you design an open ISA from a clean slate, you can make a nice orthogonal one from the get go.