It also has a solid multithreading and multitasking model, meaning that one errant program can't bring the whole computer to its knees.
Three errant programs can bring the whole computer to its knees. 
mnli hypothesis: Three errant programs can bring the whole computer to its knees.  premise: It also has a solid multithreading and multitasking model, meaning that one errant program can't bring the whole computer to its knees.