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        <div id="content-top1">Page 1 - Nicholas Christakis - Ξ ΟΞΏΟƒΟ‡Ξ­Ξ΄ΞΉΞΏ</div>
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    <pre style="white-space:pre-line"><code>NICHOLAS A. CHRISTAKIS

                                                   Ξ ΟΞΏΟƒΟ‡Ξ­Ξ΄ΞΉΞΏ



                                   ΞΞΉ ΞµΞΎΞµΞ»ΞΉΞΊΟ„ΞΉΞΊΞ­Ο‚ ΟΞ―Ξ¶ΞµΟ‚ Ο„Ξ·Ο‚ ΞΊΞ±Ξ»Ξ®Ο‚ ΞΊΞΏΞΉΞ½Ο‰Ξ½Ξ―Ξ±Ο‚



                             Ξ¤ΞΏ Ξ²ΞΉΞ²Ξ»Ξ―ΞΏ ΞΊΟ…ΞΊΞ»ΞΏΟ†ΟΟΞ·ΟƒΞµ ΟƒΟ„ΞΉΟ‚ Ξ—Ξ Ξ‘ ΟƒΟ„Ξ± Ο„Ξ­Ξ»Ξ· Ο„ΞΏΟ… ΞΞ±ΟΟ„Ξ―ΞΏΟ… 2019.
                          Ξ£Ο„Ξ± Ξ•Ξ»Ξ»Ξ·Ξ½ΞΉΞΊΞ¬ ΞΈΞ± ΞΊΟ…ΞΊΞ»ΞΏΟ†ΞΏΟΞ®ΟƒΞµΞΉ ΟƒΟ„ΞΉΟ‚ Ξ±ΟΟ‡Ξ­Ο‚ Ο„ΞΏΟ… Ξ¦ΞΈΞΉΞ½ΞΏΟ€ΟΟΞΏΟ… 2019.
                      Ξ›Ξ―Ξ³ΞΏ Ξ±ΟΞ³ΟΟ„ΞµΟΞ±, ΞΏ ΟƒΟ…Ξ³Ξ³ΟΞ±Ο†Ξ­Ξ±Ο‚ ΞΈΞ± Ξ­ΟΞΈΞµΞΉ ΟƒΟ„Ξ· Ο‡ΟΟΞ± ΞΌΞ±Ο‚ Ξ³ΞΉΞ± Ο„Ξ·Ξ½ Ο€Ξ±ΟΞΏΟ…ΟƒΞ―Ξ±ΟƒΞ·

                           Ο„ΞΏΟ… Ξ²ΞΉΞ²Ξ»Ξ―ΞΏΟ… Ο„ΞΏΟ… ΟƒΟ„Ξ·Ξ½ Ξ‘ΞΈΞ®Ξ½Ξ±, ΟƒΟ„Ξ· ΞΞµΟƒΟƒΞ±Ξ»ΞΏΞ½Ξ―ΞΊΞ· ΞΊΞ±ΞΉ ΟƒΟ„ΞΏ Ξ—ΟΞ¬ΞΊΞ»ΞµΞΉΞΏ.
                        Ξ¤ΞΏ Ξ²ΞΉΞ²Ξ»Ξ―ΞΏ Ξ®Ξ΄Ξ· ΞΌΞµΟ„Ξ±Ο†ΟΞ¬Ξ¶ΞµΟ„Ξ±ΞΉ ΟƒΞµ Ο€ΞµΟΞΉΟƒΟƒΟΟ„ΞµΟΞµΟ‚ Ξ±Ο€Ο Ξ΄ΞµΞΊΞ±Ο€Ξ­Ξ½Ο„Ξµ Ξ³Ξ»ΟΟƒΟƒΞµΟ‚.



                                               Ξ•ΞΞ”ΞΞ£Ξ•Ξ™Ξ£ ΞΊΞ¬Ο„ΞΏΟ€Ο„ΟΞΏ
                                                              1</code></pre>
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