What problem does Aleph Zero solve?

Could you elaborate on the specific challenge that Aleph Zero aims to tackle in the realm of cryptocurrency and finance? As a professional practitioner in this field, I'm interested in understanding how Aleph Zero proposes to revolutionize the existing systems. Does it focus on scalability, security, or perhaps a combination of both? What specific pain points does it address that current solutions have failed to resolve? Understanding the core problem Aleph Zero solves is crucial in assessing its potential impact and significance within the industry.