Time travelling is inherantly inaccurate.  Time machines need to be regularly recalibrated to ensure proper function.

Reword Rule 2.9 ‘The Continuum’ to the following:

Each Traveler is permitted to specify an algebraic Formula (to be tracked in the GNDT) relating six global time travel variables: ‘x’, ’y’, ’z’, ’w’, ‘t’, and ‘c’. A Formula is an equation relating least two distinct variables from this list. Each Formula must be well formed and in simplest terms, contain no transcendental functions, and not evaluate to indeterminate forms explicitly. A legal Formula must assign exactly one variable to the right hand side.  The variable ‘c’ may never appear on the right hand side of a Formula, with the exception of the Calibration Formula.  The Calibration Formula is tracked in the second GNDT, along with the time travel variables.

Some examples of legal Formulas are ‘x+y=t’, ‘300w/z = y’, and ‘x^2-t/(x+y) +1 = w’.

The Arbiter may erase any Formula that does not satisfy the above conditions, or edit any Formula for game / plot purposes.

A Traveler may, no more than once every seventy-two hours, edit one Formula in either GNDT, as long as the resulting Formula is legal.

Often, a Traveler may change one, and only one, of the values of ‘x’, ‘y’, ‘z’, ‘w’, or ‘t’ as permitted by any of the legal Formulas that exist in the GNDT (provided that division by zero does not occur), then giving notice on the front page that this has happened.  E must also recalculate the value of ‘c’ accordingly.

If ‘t’ is greater than 6000, it becomes 6000. If ‘x’ is greater than 12, it becomes 12. If ‘y’ is greater than 31, it becomes 31.  If ‘c’ is greater than 365, it becomes 365.

If ‘t’ is less than -15000, it becomes -15000. If ‘x’ is less than 0, it becomes 0. If ‘y’ is less than 0, it becomes 0.  If ‘c’ is less than 0, it becomes 0.

Often, a Traveler may attempt a Time Jump.  To do this, e first rolls DICEC and DICE2 in the GNDT, where C is the real portion of the value of ‘c’, rounded to the nearest integer.

If the second DICE roll is 1, e sets eir TL to [t]/[x]/([y] + first DICE roll), ensuring that this is normalised to a valid date (e.g. 1440/1/41 normalises to 1440/2/10).

If the second roll is 2, e instead sets eir TL to [t]/[x]/([y] - first DICE roll), normalising as necessary.

In the above, [t], [x], and [y] are the real parts of ‘t’, ‘x’, and ‘y’ rounded to the nearest integer.

The variables ‘x’, ‘y’, ‘z’, ‘w’, ‘t’, and ‘c’ shall be real numbers. If any of these variables should become complex, set the imaginary part to zero.

Add two columns to the second GNDT, namely ‘c’ and ‘Calibration Formula’. 

Set the Calibration Formula to ‘(t/100)+(x/15)+(y/15)+(z/15)+(w/15)=c’.

Use this formula to calculate the value of ‘c’, and set accordingly.