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<!DOCTYPE html>
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<title>Chapter 9 Final Words | Decision Modeling with Spreadsheets</title>
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<li><a href="./">A Minimal Book Example</a></li>
<li class="divider"></li>
<li class="chapter" data-level="1" data-path="index.html"><a href="index.html"><i class="fa fa-check"></i><b>1</b> Prerequisites</a></li>
<li class="chapter" data-level="" data-path="part-1-spreadsheet-engineering.html"><a href="part-1-spreadsheet-engineering.html"><i class="fa fa-check"></i>Part 1 – Spreadsheet Engineering</a></li>
<li class="chapter" data-level="2" data-path="spreadsheet1.html"><a href="spreadsheet1.html"><i class="fa fa-check"></i><b>2</b> Tortuous Pie-making in the Sky</a><ul>
<li class="chapter" data-level="2.1" data-path="spreadsheet1.html"><a href="spreadsheet1.html#spreadsheets-really"><i class="fa fa-check"></i><b>2.1</b> Spreadsheets? Really?</a></li>
<li class="chapter" data-level="2.2" data-path="spreadsheet1.html"><a href="spreadsheet1.html#questions-questions"><i class="fa fa-check"></i><b>2.2</b> Questions, questions</a></li>
<li class="chapter" data-level="2.3" data-path="spreadsheet1.html"><a href="spreadsheet1.html#count-the-errors-of-our-ways"><i class="fa fa-check"></i><b>2.3</b> Count the errors of our ways</a></li>
<li class="chapter" data-level="2.4" data-path="spreadsheet1.html"><a href="spreadsheet1.html#prevailing-recommended-practices"><i class="fa fa-check"></i><b>2.4</b> Prevailing recommended practices</a><ul>
<li class="chapter" data-level="2.4.1" data-path="spreadsheet1.html"><a href="spreadsheet1.html#do-not-ever-do-this"><i class="fa fa-check"></i><b>2.4.1</b> Do not ever do this</a></li>
<li class="chapter" data-level="2.4.2" data-path="spreadsheet1.html"><a href="spreadsheet1.html#instead-practice-these"><i class="fa fa-check"></i><b>2.4.2</b> Instead practice these</a></li>
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<li class="chapter" data-level="2.5" data-path="spreadsheet1.html"><a href="spreadsheet1.html#pie-in-the-sky"><i class="fa fa-check"></i><b>2.5</b> Pie-in-the-Sky</a></li>
<li class="chapter" data-level="2.6" data-path="spreadsheet1.html"><a href="spreadsheet1.html#wheres-the-paper-and-pencils"><i class="fa fa-check"></i><b>2.6</b> Where’s the paper and pencils?</a></li>
<li class="chapter" data-level="2.7" data-path="spreadsheet1.html"><a href="spreadsheet1.html#cost-and-volume"><i class="fa fa-check"></i><b>2.7</b> Cost and volume</a></li>
<li class="chapter" data-level="2.8" data-path="spreadsheet1.html"><a href="spreadsheet1.html#demand-analysis"><i class="fa fa-check"></i><b>2.8</b> Demand analysis</a></li>
<li class="chapter" data-level="2.9" data-path="spreadsheet1.html"><a href="spreadsheet1.html#weekly-profit"><i class="fa fa-check"></i><b>2.9</b> Weekly profit</a></li>
<li class="chapter" data-level="2.10" data-path="spreadsheet1.html"><a href="spreadsheet1.html#profit-sensitivity-to-price"><i class="fa fa-check"></i><b>2.10</b> Profit sensitivity to price</a></li>
<li class="chapter" data-level="2.11" data-path="spreadsheet1.html"><a href="spreadsheet1.html#lo-and-behold"><i class="fa fa-check"></i><b>2.11</b> Lo and behold</a></li>
<li class="chapter" data-level="2.12" data-path="spreadsheet1.html"><a href="spreadsheet1.html#references-and-endnotes"><i class="fa fa-check"></i><b>2.12</b> References and endnotes</a></li>
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<li class="chapter" data-level="3" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html"><i class="fa fa-check"></i><b>3</b> Chaotic Pie-making in the Sky"</a><ul>
<li class="chapter" data-level="3.1" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#how-many"><i class="fa fa-check"></i><b>3.1</b> How many?</a></li>
<li class="chapter" data-level="3.2" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#whats-new"><i class="fa fa-check"></i><b>3.2</b> What’s new?</a><ul>
<li class="chapter" data-level="3.2.1" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#the-costs-they-are-a-changing"><i class="fa fa-check"></i><b>3.2.1</b> The costs they are a-changing</a></li>
<li class="chapter" data-level="3.2.2" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#demand-takes-a-step-back"><i class="fa fa-check"></i><b>3.2.2</b> Demand takes a step back</a></li>
<li class="chapter" data-level="3.2.3" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#a-new-profit-dawning"><i class="fa fa-check"></i><b>3.2.3</b> A new profit dawning</a></li>
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<li class="chapter" data-level="3.3" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#an-algebra-of-pie"><i class="fa fa-check"></i><b>3.3</b> An algebra of pie</a><ul>
<li class="chapter" data-level="3.3.1" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#a-little-lite-algebra"><i class="fa fa-check"></i><b>3.3.1</b> A little lite algebra</a></li>
<li class="chapter" data-level="3.3.2" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#pvs-last-stand"><i class="fa fa-check"></i><b>3.3.2</b> PV’s last stand</a></li>
<li class="chapter" data-level="3.3.3" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#the-model-in-the-mist"><i class="fa fa-check"></i><b>3.3.3</b> The model in the mist</a></li>
<li class="chapter" data-level="3.3.4" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#how-sensitive"><i class="fa fa-check"></i><b>3.3.4</b> How sensitive?</a></li>
<li class="chapter" data-level="3.3.5" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#one-way-or-the-other"><i class="fa fa-check"></i><b>3.3.5</b> One way or the other</a></li>
</ul></li>
<li class="chapter" data-level="3.4" data-path="chaotic-pie-making-in-the-sky.html"><a href="chaotic-pie-making-in-the-sky.html#lo-and-behold-yet-again"><i class="fa fa-check"></i><b>3.4</b> Lo and behold yet again</a></li>
<li class="chapter" data-level="3.5" data-path="spreadsheet1.html"><a href="spreadsheet1.html#references-and-endnotes"><i class="fa fa-check"></i><b>3.5</b> References and endnotes</a></li>
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<li class="chapter" data-level="4" data-path="case-salmerón-solar-systems-llc.html"><a href="case-salmerón-solar-systems-llc.html"><i class="fa fa-check"></i><b>4</b> Case: Salmerón Solar Systems LLC</a><ul>
<li class="chapter" data-level="4.1" data-path="case-salmerón-solar-systems-llc.html"><a href="case-salmerón-solar-systems-llc.html#photovoltaic-systems"><i class="fa fa-check"></i><b>4.1</b> Photovoltaic systems</a></li>
<li class="chapter" data-level="4.2" data-path="case-salmerón-solar-systems-llc.html"><a href="case-salmerón-solar-systems-llc.html#the-particulars"><i class="fa fa-check"></i><b>4.2</b> The particulars</a></li>
<li class="chapter" data-level="4.3" data-path="case-salmerón-solar-systems-llc.html"><a href="case-salmerón-solar-systems-llc.html#some-definitions-are-in-order"><i class="fa fa-check"></i><b>4.3</b> Some definitions are in order</a></li>
<li class="chapter" data-level="4.4" data-path="case-salmerón-solar-systems-llc.html"><a href="case-salmerón-solar-systems-llc.html#requirements"><i class="fa fa-check"></i><b>4.4</b> Requirements</a></li>
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<li class="chapter" data-level="5" data-path="literature.html"><a href="literature.html"><i class="fa fa-check"></i><b>5</b> Literature</a></li>
<li class="chapter" data-level="6" data-path="bringing-pie-to-earth.html"><a href="bringing-pie-to-earth.html"><i class="fa fa-check"></i><b>6</b> Bringing Pie to Earth"</a><ul>
<li class="chapter" data-level="6.1" data-path="bringing-pie-to-earth.html"><a href="bringing-pie-to-earth.html#it-all-started-here"><i class="fa fa-check"></i><b>6.1</b> It all started here</a></li>
<li class="chapter" data-level="6.2" data-path="bringing-pie-to-earth.html"><a href="bringing-pie-to-earth.html#from-humble-beginnings"><i class="fa fa-check"></i><b>6.2</b> From humble beginnings</a><ul>
<li class="chapter" data-level="6.2.1" data-path="bringing-pie-to-earth.html"><a href="bringing-pie-to-earth.html#decisions-decisions"><i class="fa fa-check"></i><b>6.2.1</b> 1. Decisions, decisions</a></li>
<li class="chapter" data-level="6.2.2" data-path="bringing-pie-to-earth.html"><a href="bringing-pie-to-earth.html#resources-they-are-aconstraining"><i class="fa fa-check"></i><b>6.2.2</b> 2. Resources they are a’constraining</a></li>
<li class="chapter" data-level="6.2.3" data-path="bringing-pie-to-earth.html"><a href="bringing-pie-to-earth.html#not-without-constraint"><i class="fa fa-check"></i><b>6.2.3</b> 3. Not without constraint</a></li>
<li class="chapter" data-level="6.2.4" data-path="bringing-pie-to-earth.html"><a href="bringing-pie-to-earth.html#let-us-eat-pie"><i class="fa fa-check"></i><b>6.2.4</b> Let us eat pie</a></li>
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<li class="chapter" data-level="6.3" data-path="bringing-pie-to-earth.html"><a href="bringing-pie-to-earth.html#an-easier-way"><i class="fa fa-check"></i><b>6.3</b> An easier way?</a></li>
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<li class="chapter" data-level="7" data-path="methods.html"><a href="methods.html"><i class="fa fa-check"></i><b>7</b> Methods</a></li>
<li class="chapter" data-level="8" data-path="applications.html"><a href="applications.html"><i class="fa fa-check"></i><b>8</b> Applications</a><ul>
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<li class="chapter" data-level="8.2" data-path="applications.html"><a href="applications.html#example-two"><i class="fa fa-check"></i><b>8.2</b> Example two</a></li>
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<li class="chapter" data-level="9" data-path="final-words.html"><a href="final-words.html"><i class="fa fa-check"></i><b>9</b> Final Words</a></li>
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