
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given the function $f(x)= \dfrac {1}{2}+\log _{2} \dfrac {x}{1-x}$, define $S_{n}=f( \dfrac {1}{n})+f( \dfrac {2}{n})+f( \dfrac {3}{n})+…+f( \dfrac {n-1}{n})$, where $n∈N_{+}$, $(n≥slant 2)$, find $S_{n}=$ _____ .

Present the answer in LaTex format: \boxed{Your answer}
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