Opposing the Four Sons

בָּרוּךְ הַמָּקוֹם, בָּרוּךְ הוּא, בָּרוּךְ שֶׁנָּתַן תּוֹרָה לְעַמּוֹ יִשְׂרָאֵל, בָּרוּךְ הוּא. כְּנֶגֶד אַרְבָּעָה בָנִים דִּבְּרָה תוֹרָה: אֶחָד חָכָם, וְאֶחָד רָשָׁע, וְאֶחָד תָּם, וְאֶחָד שֶׁאֵינוֹ יוֹדֵעַ לִשְׁאוֹל.

Pesach Haggadah, Magid, The Four Sons 1

Blessed is the Place [of all], Blessed is He; Blessed is the One who Gave the Torah to His people Israel, Blessed is He. Corresponding to four sons did the Torah speak; one [who is] wise, one [who is] evil, one who is innocent and one who doesn't know to ask.

בראשית ב׳:י״ח

(יח) וַיֹּ֙אמֶר֙ יְהוָ֣ה אֱלֹהִ֔ים לֹא־ט֛וֹב הֱי֥וֹת הָֽאָדָ֖ם לְבַדּ֑וֹ אֶֽעֱשֶׂהּ־לּ֥וֹ עֵ֖זֶר כְּנֶגְדּֽוֹ׃

Genesis 2:18

(18) And the LORD God said: ‘It is not good that the man should be alone; I will make him a help meet for (to oppose) him.’

Think of “against” כנגד as in opposition. Against – כנגד asks us to engage in discourse and debate these personality types; to confront, admonish, affront… Think of it as a pedagogic teaching-moment. Think of the friction and counter-balance in a healthy relationship. Think of the first relationship, of Eve with Adam:

רש"י על בראשית ב׳:י״ח:ב׳

עזר כנגדו זָכָה-עֵזֶר; לאֹ זָכָה-כְּנֶגּדּוֹ לְהִלָחֵם:

Rashi on Genesis 2:18:2

עזר כנגדו A HELP MEET FOR HIM — (כנגדו literally, opposite, opposed to him) If he is worthy she shall be a help to him; if he is unworthy she shall be opposed to him, to fight him.

The type of relationship and conversation demanded by the Torah for the Four Children is the same type of interaction associated with a marriage… If the child is missing the point of the Seder, you need to speak up for both your sakes.
When you think of “against” you can also think of מתן תורה the Revelation at Sinai… This is after all how the haggadah introduces the Four Sons. בָּרוּךְ שֶׁנָּתַן תּוֹרָה לְעַמּוֹ יִשְׂרָאֵל, בָּרוּךְ הוּא

When the Torah confronts the four children think of a revelation, think of a life changing moment, an epiphany, an intervention. for more see: https://madlik.com/2016/04/20/wise-guy/

שמות י״ט:ב׳

(ב) וַיִּסְע֣וּ מֵרְפִידִ֗ים וַיָּבֹ֙אוּ֙ מִדְבַּ֣ר סִינַ֔י וַֽיַּחֲנ֖וּ בַּמִּדְבָּ֑ר וַיִּֽחַן־שָׁ֥ם יִשְׂרָאֵ֖ל נֶ֥גֶד הָהָֽר׃

Exodus 19:2

(2) And when they were departed from Rephidim, and were come to the wilderness of Sinai, they encamped in the wilderness; and there Israel encamped opposite the mount.