Universities have requirements you need to cover in order to graduate. So when a job lists a BS CS degree as a requirement, they're saying they expect you to be familiar with the core subjects of the field. Certainly not an expert in any one subject, but at least familiar. (If they want subject area experts they'll usually be advertising for MS/PhD with a focus in [blah]) Obviously this still gives the Universities a great deal of trust, with the implication that in order to receive the degree, you had to demonstrate your capability. That's a sizable question mark, even though it's what University accreditation is supposed to be for...
Sorry, went off on a bit of a tangent there. Anyways, four years of self-directed learning won't necessarily cover the same subject matter they may expect you to be familiar with.
Universities have requirements you need to cover in order to graduate. So when a job lists a BS CS degree as a requirement, they're saying they expect you to be familiar with the core subjects of the field. Certainly not an expert in any one subject, but at least familiar. (If they want subject area experts they'll usually be advertising for MS/PhD with a focus in [blah]) Obviously this still gives the Universities a great deal of trust, with the implication that in order to receive the degree, you had to demonstrate your capability. That's a sizable question mark, even though it's what University accreditation is supposed to be for...
Sorry, went off on a bit of a tangent there. Anyways, four years of self-directed learning won't necessarily cover the same subject matter they may expect you to be familiar with.