Compare Classical vs Quantum Computing: Key Differences

Quantum computing gets talked about as magic, and most comparisons skip the part you actually want. This lays the two side by side: how each stores information, how each solves problems, what they can really do today, the problems each suits, and a realistic timeline for quantum advantage. Honest about hype, clear on the substance.

Compare classical computing and quantum computing across the following dimensions. Present your answer as a structured side-by-side comparison:

- How information is stored (bits vs qubits)
- How problems are solved (sequential logic vs superposition/entanglement)
- Current real-world capabilities and limitations
- Types of problems each is best suited for
- Realistic timeline for practical quantum advantage in the field of {DOMAIN}

Write for an audience with {PRIOR_KNOWLEDGE} of computer science. Be precise about what quantum computers can and cannot do today: avoid both hype and undue pessimism. Flag any claims that are still actively debated in the research community.