She enjoys observing the Sabbath every week.

Sabbath observance is an important aspect of religious practice.

She is studying obstetrics at medical school.

The researchers accounted for the observational errors in their data analysis.

The experiment results may be affected by observational errors.

Using security-through-obscurity as a defense mechanism is not recommended.

Using security-by-obscurity as a defense mechanism is not recommended.

Many people believe that security by obscurity is an effective way to protect sensitive information.

Etorre's observation is that anything that can go wrong will go wrong, but it will do so in a way that you never expected.

Ettore's observation is that anything that can go wrong will go wrong, but with a humorous twist.