Quick answer: Artificial intelligence isn't one continuous technology — it's a sequence of different approaches to the same goal, each with a different idea of what 'intelligence' meant computationally, from the rule-based symbolic era (1950s–1980s) through today's data-trained neural network models.
"AI" isn't one continuous technology - it's a sequence of quite different approaches, each with a different idea of what intelligence even meant computationally.
Early AI research tried to encode human reasoning as explicit logical rules - if this, then that. This approach was good at narrow, well-defined problems like chess, but it didn't scale to messy, real-world tasks with too many exceptions to hand-code.
Instead of hand-coding rules, machine learning trains a system to find patterns in data on its own. This traded explicit human logic for statistical pattern-matching - and worked far better on tasks like image recognition that are hard to describe as explicit rules.
Deep learning - neural networks with many layers - unlocked dramatically better performance on complex pattern recognition once enough data and computing power became available, particularly for images, speech, and language.
The current wave of models don't just classify or predict - they generate new text, images, and video directly. This is the shift that made tools like Promptus possible: not analyzing existing content, but producing new content from a description.