Learn Hardcore Turkish: Sonuçta herkes insan; küçük hataları kibarca düzeltelim. - After all, everyone is human; let’s correct small mistakes politely.

ufak tefek hatalar(ı): very common, <a class="border-b border-dotted border-blue-400 dark:border-blue-500 cursor-pointer text-inherit no-underline" href="/grammar/turkish/register/colloquial">colloquial “minor, little” mistakes
küçük hatalar(ı): neutral “small mistakes”
ufak hatalar(ı): similar to küçük All can take <a class="border-b border-dotted border-blue-400 dark:border-blue-500 cursor-pointer text-inherit no-underline" href="/grammar/turkish/nouns/case-accusative">accusative -ı if you intend them as definite.

It’s an adverb meaning “after all,” “ultimately,” or “in the end.” It’s built from sonuç (result) + the locative -ta (“in/at”), used adverbially to present a conclusion or justification. It softens what follows and frames it as a reasonable stance. Close alternatives: sonuç olarak, nihayetinde, neticede.

Why is there a semicolon (;) instead of a comma or a period?

Both parts are independent clauses that are tightly connected in meaning. In Turkish, a semicolon, like in English, neatly links closely related sentences. A period would also be fine. A comma before an independent clause is less formal and often avoided in careful writing; you’d usually choose a semicolon, a period, or add a linker like bu yüzden, o yüzden, çünkü (with a rearranged structure).

Why is it Herkes insan and not Herkes insandır or Herkes bir insan?

Herkes insan: Present equational sentences often drop the copula; this is the most neutral, colloquial statement of classification.
Herkes insandır: The -dır copular ending adds formality/emphasis or “statement of general truth” flavor.
Herkes bir insan: Emphasizes “an individual human (just a human),” often used when stressing fallibility or ordinariness. It’s possible but less neutral than the version given.

Could I say ?