The early developers of artificial intelligence in the 1950s and 1960s expected that machines would soon match human reasoning across all domains. ______ , progress proved far slower and more domain-specific than predicted, with truly general-purpose machine reasoning remaining elusive even after seventy years of research.
Which choice completes the text with the most logical transition?
- Acheck_circle
In reality
- B
Therefore
- C
For example
- D
Indeed
Explanation
Predictions are contrasted with what actually happened. "In reality" signals such contrast. The others do not.