twentyseventeen_categorized_blog(): bool

190function twentyseventeen_categorized_blog() {191	$category_count = get_transient( 'twentyseventeen_categories' );192 193	if ( false === $category_count ) {194		// Create an array of all the categories that are attached to posts.195		$categories = get_categories(196			array(197				'fields'     => 'ids',198				'hide_empty' => 1,199				// We only need to know if there is more than one category.200				'number'     => 2,201			)202		);203 204		// Count the number of categories that are attached to the posts.205		$category_count = count( $categories );206 207		set_transient( 'twentyseventeen_categories', $category_count );208	}209 210	// Allow viewing case of 0 or 1 categories in post preview.211	if ( is_preview() ) {212		return true;213	}214 215	return $category_count > 1;216}