How does the alphabetical approach differ from the probabilistic one?

The alphabetical approach allows you to determine the amount of information contained in the text, is used when technical means are used to transform, store and transmit information.
The probabilistic approach was fully developed in the middle of the 20th century, it is used to measure the amount of information when events with different probabilities occur.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.