When using science to investigate physical phenomena, which of the following is NOT a characteristic of the event must exist?

measurable
falsifiable
observable
readable

ofthe event must exist doesn't make any sense to me.

To determine which of the characteristics is NOT a requirement for using science to investigate physical phenomena, we can examine each of them individually:

1. Measurable: One of the key aspects of science is the ability to measure and quantify different aspects of a phenomenon. This involves using instruments and tools to collect data and obtain numerical values.

2. Falsifiable: Science aims to propose hypotheses that can be tested and proven false. Falsifiability ensures that scientific claims can be rigorously scrutinized and verified through experimentation and evidence.

3. Observable: Scientific investigations rely on observations made through the senses or with the aid of technology. Observations provide empirical evidence and serve as a basis for scientific explanations and theories.

4. Readable: This characteristic is not typically associated with scientific investigations. While scientists do generate written reports and research papers to communicate their findings, the act of being "readable" is not a prerequisite for conducting scientific investigations.

Therefore, the characteristic that is NOT a requirement for using science to investigate physical phenomena is "readable."