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sin(x) will always return the same value, as long as x stays the same. Today() could return different results over time because it depends on values outside of your controldepends on values outside of your control. For example, if someonesomething beyond the control of your program changes the system's internal datetime while$current_datetime while your program is running, Today() will suddenly yield different results.

sin(x) will always return the same value, as long as x stays the same. Today() could return different results over time because it depends on values outside of your control. For example, if someone changes the system's internal datetime while your program is running, Today() will suddenly yield different results.

sin(x) will always return the same value, as long as x stays the same. Today() could return different results over time because it depends on values outside of your control. For example, if something beyond the control of your program changes the system's internal $current_datetime while your program is running, Today() will suddenly yield different results.

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sin(x) will always return the same value, as long as x stays the same. Today() could return different results over time because it depends on values outside of your control. For example, if someone changes the system's internal datetime while your program is running, Today() will suddenly yield different results.