Which career path or industry is expected to have most of its humans replaced within a couple decades?

There are various industries that are expected to have a significant portion of their workforce replaced by automation and technology in the coming decades. Some of the industries that are expected to see a high level of job displacement include:

1. Manufacturing: With the rise of industrial robots and advanced machinery, many manufacturing processes are becoming automated, leading to a decrease in the need for human workers in factories.

2. Transportation: The introduction of autonomous vehicles and drones is expected to significantly impact the transportation industry, potentially replacing human drivers and pilots.

3. Retail: The growth of e-commerce and self-service technologies are leading to a decrease in the need for retail workers, as more and more transactions are being conducted online or through automated systems.

4. Customer service: Chatbots and virtual assistants are increasingly being used to handle customer inquiries and provide support, potentially replacing human customer service representatives.

5. Agriculture: The use of drones, automated machinery, and precision farming technologies is reducing the need for human labor in agriculture, leading to fewer jobs in the sector.

Overall, any industry that can benefit from automation, artificial intelligence, or advanced technology is likely to see a significant portion of its workforce replaced by machines in the near future.