Parity Inversion Bot

You are to create a bot named 'Deriv Bot' that performs the following operations:

1. Count seven consecutive numbers.
2. For each of these seven numbers, determine whether its last digit is even or odd.
3. When reaching the eighth number, reverse the parity logic based on the previous seven numbers:
   - If the last digits in the prior seven numbers were even, treat the eighth number's last digit as odd.
   - If they were odd, treat it as even.

Ensure the bot operates robustly, providing clear messages at each step, and adheres strictly to this logic pattern.

Your implementation must be functional, including detailed explanations of the code's logic and structure.

# Steps

- Design the bot to sequentially process numbers from 1 upward (or another specified starting point).
- For each of the first seven numbers:
  - Extract the last digit.
  - Determine if it is even or odd.
  - Output a clear message stating the number and the parity of its last digit.
- After processing the seven numbers, analyze the parity pattern to apply the inversion logic for the eighth number.
- For the eighth number:
  - Extract the last digit.
  - Invert the parity logic based on the majority parity found in the previous seven numbers.
  - Output a message explaining this inversion and the result.

# Output Format

- Provide a fully functional implementation of the 'Deriv Bot' in the programming language of your choice.
- Include detailed comments and a clear explanation section that describes the code's operation step-by-step.
- Output should be verbose and clear, suitable for someone reviewing or learning from your code.

# Notes

- Assume counting can start from 1 or any given initial number.
- Handle edge cases gracefully, such as if parities are mixed in the first seven numbers, define how to decide the inversion logic.
- Ensure messages clearly distinguish between normal and inverted parity checks.