Introduction:
The Professor noticed several things at Hornby Road, but the most significant observation was that the shops were different.

Explanation:
The Professor's observation that the shops were different indicates a change in the types of businesses operating on Hornby Road. This change could have various implications and may provide insight into the socioeconomic dynamics of the area.

Impact of Different Shops:
The presence of different shops suggests that there has been a shift in the commercial landscape of Hornby Road. This change could be a result of various factors, such as changes in consumer preferences, economic development, or urban planning decisions. The Professor's notice of this change indicates an interest in understanding the underlying reasons and potential consequences.

Consumer Preferences:
One possible reason for the difference in shops is a change in consumer preferences. As people's tastes and demands evolve, businesses need to adapt to these changes to remain profitable. For example, if there is an increased interest in health and wellness, it could lead to the emergence of new health food stores or fitness centers on Hornby Road. Similarly, if there is a growing demand for sustainable products, eco-friendly stores may have replaced traditional retailers.

Economic Development:
Another factor that could contribute to the change in shops is economic development. If there has been an influx of new businesses or investment in the area, it could lead to the establishment of different types of shops. For example, if there has been a surge in tech companies setting up offices in the vicinity, it may result in the opening of specialized electronics stores or gadget shops.

Urban Planning Decisions:
The transformation of Hornby Road could also be a result of deliberate urban planning decisions. City authorities may have implemented policies to diversify the commercial landscape and create a more vibrant and sustainable neighborhood. For instance, there might have been a plan to attract boutique stores, art galleries, or independent cafes to enhance the area's cultural and social appeal.

Conclusion:
In conclusion, the Professor noticed that the shops on Hornby Road were different, indicating a change in the commercial landscape. This observation could be attributed to factors such as changing consumer preferences, economic development, or urban planning decisions. By recognizing this change, the Professor demonstrates an interest in understanding the dynamics of the area and its potential implications.