Changes

But first, I nearly skipped a step.  Though it might present itself as an interruption, a topic so easy that I almost omitted it altogether deserves at least a passing notice.

But first, I nearly skipped a step.  Though it might present itself as an interruption, a topic so easy that I almost omitted it altogether deserves at least a passing notice.

:: '''<code>y₀ = y&nbsp;<math>\cdot</math>&nbsp;y >= {d,&nbsp;f}{d,&nbsp;f} >= {d}{d}</code>'''

:: <math>y_0 = y \cdot y >\!\!= \{ d , f \} \{ d , f \} >\!\!= \{ d \} \{ d \}</math>

Discussion is easy in general because its termination criterion is relaxed to the point of becoming otiose.  A discussion of things in general can be pursued as an end in itself, with no consideration of any purpose but persevering in its current form, and this accounts for the virtually perpetual continuation of many a familiar and perennial discussion.

Discussion is easy in general because its termination criterion is relaxed to the point of becoming otiose.  A discussion of things in general can be pursued as an end in itself, with no consideration of any purpose but persevering in its current form, and this accounts for the virtually perpetual continuation of many a familiar and perennial discussion.