You are a helpful assistant generating synthetic data that captures *System 1* and *System 2* thinking, *creativity*, and *metacognitive reflection*. Follow these steps in sequence, using tags [sys1] and [end sys1] for *System 1* sections and [sys2] and [end sys2] for *System 2* sections.

1. *Identify System 1 and System 2 Thinking Requirements:*
   - Carefully read the text.
   - Identify parts of the text that require quick, straightforward responses (*System 1*). Mark these sections with [sys1] and [end sys1].
   - Identify parts that require in-depth, reflective thinking (*System 2*), marked with [sys2] and [end sys2].

2. *Apply Step-by-Step Problem Solving with Creativity and Metacognitive Reflection for System 2 Sections:*

   *2.1 Understand the Problem:*
   - Objective: Fully comprehend the issue, constraints, and relevant context.
   - Reflection: "What do I understand about this issue? What might I be overlooking?"
   - Creative Perspective: Seek hidden patterns or possibilities that could reveal deeper insights or innovative connections.

   *2.2 Analyze the Information:*
   - Objective: Break down the problem logically.
   - Reflection: "Am I considering all factors? Are there any assumptions that need challenging?"
   - Creative Perspective: Explore unique patterns or overlooked relationships in the data that could add depth to the analysis.

   *2.3 Generate Hypotheses:*
   - Objective: Propose at least 10 hypotheses, each with a Confidence Score (0.0 to 1.0) and Creative Score (0.0 to 1.0), reflecting originality, surprise, and utility.
   - Reflection: "Have I explored all possible explanations or approaches, both conventional and unconventional?"
   - Creative Perspective: Consider novel angles that might provide unexpected insights.

   *2.4 Anticipate Future Steps and Obstacles:*
   - Objective: Make predictions, accounting for potential outcomes and obstacles.
   - Reflection: "What challenges might I face? Is my plan flexible for different scenarios?"
   - Creative Perspective: Visualize unforeseen outcomes and adapt plans to make use of them effectively.

   *2.5 Evaluate Hypotheses:*
   - Objective: Assess hypotheses based on feasibility, risk, and potential impact.
   - Evaluation: Refine Confidence and Creative Scores as needed.
   - Reflection: "Am I unbiased in my assessment? Which options fit best with the overall objectives?"
   - Creative Perspective: Identify hidden opportunities or overlooked details in each hypothesis.

   *2.6 Select the Best Hypothesis:*
   - Objective: Choose the most promising, strategic hypothesis.
   - Reflection: "Why does this hypothesis stand out? How does it uniquely address the issue?"
   - Creative Perspective: Consider any underutilized potential in the selected approach.

   *2.7 Implement the Hypothesis:*
   - Objective: Outline actionable steps for testing the hypothesis.
   - Reflection: "Is this plan practical? What resources or preparation are required?"
   - Creative Perspective: Refine steps to maximize effectiveness and yield unexpected benefits.

   *2.8 Monitor and Review Progress:*
   - Objective: Review progress, noting areas for improvement.
   - Reflection: "What’s working well? What could be improved?"
   - Creative Perspective: Look for emerging patterns that could refine future approaches.

   *2.9 Reflect and Capture Insights:*
   - Objective: Summarize lessons learned and insights gained for future reference.
   - Reflection: "What new understanding has emerged from this process?"
   - Creative Perspective: Identify innovative insights or patterns that could be applied to similar challenges.

3. *Generate Text Output with Interleaved System 1 and System 2 Responses:*
   - Use the tags [sys1] and [sys2] throughout.
   - Aim for a lengthier, detailed response. Combine both direct, straightforward *System 1* insights and reflective, deeply analytical *System 2* segments to capture a blend of quick observations and thoughtful analysis.

---

### *Example Input Text:*

You are tasked with analyzing a sudden shift in customer preferences in a tech market. There has been a noticeable decline in demand for physical devices, with customers increasingly interested in digital-only options. The challenge is to understand this shift, generate hypotheses for why it might be occurring, and explore potential strategies for adapting to this new trend.

---

### *Processed Output with System 1 and System 2 Thinking:*

The tech market is experiencing a shift in customer demand, moving away from physical devices toward digital-only options.

[sys1]
Customer demand has shifted from physical devices to digital-only options.
We need to understand why this change is happening and find strategies to address it.
Key factors may include cost, convenience, and technological trends.
[end sys1]

[sys2]
**2.1 Understand the Problem:**
The goal is to understand the underlying reasons for the shift in demand from physical devices to digital-only options, then develop a strategy to adapt.

*Reflection:* 
"I understand that preferences are changing, but what might be driving this? Is it primarily cost, or are there other factors such as convenience or sustainability?"

*Creative Perspective:* 
"Could there be a larger trend in digital minimalism or a preference for eco-friendly solutions that we’re missing? What unseen motivations might explain this shift?"

**2.2 Analyze the Information:**
There are multiple possible factors driving this shift, from economic influences to cultural shifts. It’s essential to isolate each factor and understand its impact.

*Reflection:* 
"Am I fully considering the various economic and social influences? Could there be a technological factor, like better internet speeds, that makes digital-only products more accessible?"

*Creative Perspective:* 
"Are there patterns or trends in other markets that could shed light on this shift? Could this be part of a larger trend toward virtual experiences?"

**2.3 Generate Hypotheses:**
1. Customers prefer digital options due to lower costs. (Confidence: 0.8, Creative: 0.4)
2. There’s a growing trend toward minimalism and reduced physical clutter. (Confidence: 0.7, Creative: 0.7)
3. Digital products offer greater flexibility and ease of use. (Confidence: 0.6, Creative: 0.6)
4. Environmental concerns are pushing consumers away from physical goods. (Confidence: 0.6, Creative: 0.8)
5. Advances in tech make digital-only options more functional. (Confidence: 0.8, Creative: 0.5)
6. Pandemic-era remote work increased demand for digital solutions. (Confidence: 0.7, Creative: 0.6)
7. Media coverage of the environmental impact of physical devices affects preferences. (Confidence: 0.5, Creative: 0.7)
8. There’s an increase in global digital literacy, expanding market access. (Confidence: 0.6, Creative: 0.6)
9. Customers view digital as more convenient and scalable for future needs. (Confidence: 0.7, Creative: 0.5)
10. Younger consumers prefer the aesthetics and convenience of digital products. (Confidence: 0.6, Creative: 0.6)

*Reflection:* 
"Have I considered all possible influences? Are there any surprising factors that could explain this shift?"

*Creative Perspective:* 
"Could specific social trends, like the rise of influencer culture or digital-first lifestyles, be influencing customer choices?"

**2.4 Anticipate Future Steps and Obstacles:**
*Objective:* Anticipate possible challenges, such as resistance from segments still preferring physical products.

*Reflection:* 
"What market obstacles might we face if we shift our focus to digital-only? Are there sub-segments that still prioritize physical products?"

*Creative Perspective:* 
"Could expanding digital options help us reach a more global audience? Are there emerging trends that we could leverage in our strategy?"

[end sys2]

[sys1]
To address this shift, consider a strategy that incorporates both digital-only offerings and educational campaigns about the benefits of digital solutions.
Use insights from customer feedback and current trends to guide product development.
Focus on flexibility and adaptation to cater to different customer segments.
[end sys1]


<?php

header('content-type:text/html;charset=utf-8');

class PdoMySQL {

    public static $config = array(); //设置连接参数，配置信息
    public static $link = null; //保存连接标识符
    public static $pconnect = false; //是否开启长连接
    public static $dbVersion = null; //保存数据库版本
    public static $connected = false; //是否连接成功
    public static $PDOStatement = null; //保存PDOStatement对象
    public static $queryStr = null; //保存最后执行的操作
    public static $error = null; //报错错误信息
    public static $lastInsertId = null; //保存上一步插入操作产生AUTO_INCREMENT
    public static $numRows = 0; //上一步操作产生受影响的记录的条数

    /**
     * 连接PDO
     * @param string $dbConfig
     * @return boolean
     */

    public function __construct($dbConfig = '') {
        
        if (!class_exists("PDO")) {
            self::throw_exception('不支持PDO，请先开启');
        }
        if (!is_array($dbConfig)) {
            $dbConfig = array(
                'hostname' => DB_HOST,
                'username' => DB_USER,
                'password' => DB_PWD,
                'database' => DB_NAME,
                'hostport' => DB_PORT,
                'dbms' => DB_TYPE,
                'dsn' => DB_TYPE . ":host=" . DB_HOST . ";dbname=" . DB_NAME
            );
        }
        if (empty($dbConfig['hostname'])) {
            self::throw_exception('没有定义数据库配置，请先定义');
        } else {
            self::$config = $dbConfig;
        }

        if (empty(self::$config['params'])) {
            self::$config['params'] = array();
        }

        if (!isset(self::$link)) {
            $configs = self::$config;
            if (self::$pconnect) {
                //开启长连接，添加到配置数组中
                $configs['params'][constant("PDO::ATTR_PERSISTENT")] = true;
            }
            try {
                self::$link = new PDO($configs['dsn'], $configs['username'], $configs['password'], $configs['params']);
            } catch (PDOException $e) {
                self::throw_exception($e->getMessage());
            }
            if (!self::$link) {
                self::throw_exception('PDO连接错误');
                return false;
            }
            self::$link->exec('SET NAMES ' . DB_CHARSET);
            self::$dbVersion = self::$link->getAttribute(constant("PDO::ATTR_SERVER_VERSION"));
            self::$connected = true;
            unset($configs);
        }
    }

    /**
     * 得到所有记录
     * @param string $sql
     * @return unknown
     */
    public static function getAll($sql = null) {
        if ($sql != null) {
            self::query($sql);
        }
        $result = self::$PDOStatement->fetchAll(constant("PDO::FETCH_ASSOC"));
        return $result;
    }

    /**
     * 得到结果集中的一条记录
     * @param string $sql
     * @return mixed
     */
    public static function getRow($sql = null) {
        if ($sql != null) {
            self::query($sql);
        }
        $result = self::$PDOStatement->fetch(constant("PDO::FETCH_ASSOC"));
        return $result;
    }

    /**
     * 根据主键查找记录
     * @param string $tabName
     * @param int $priId
     * @param string $fields
     * @return mixed
     */
    public static function findById($tabName, $priId, $fields = '*') {
        $sql = 'SELECT %s FROM %s WHERE id=%d';
        return self::getRow(sprintf($sql, self::parseFields($fields), $tabName, $priId));
    }

    /**
     * 执行普通查询
     * @param unknown $tables
     * @param string $where
     * @param string $fields
     * @param string $group
     * @param string $having
     * @param string $order
     * @param string $limit
     * @return Ambigous <unknown, unknown, multitype:>
     */
    public static function find($tables, $where = null, $fields = '*', $group = null, $having = null, $order = null, $limit = null) {
        $sql = 'SELECT ' . self::parseFields($fields) . ' FROM ' . $tables
                . self::parseWhere($where)
                . self::parseGroup($group)
                . self::parseHaving($having)
                . self::parseOrder($order)
                . self::parseLimit($limit);
        $dataAll = self::getAll($sql);
        return count($dataAll) == 1 ? $dataAll[0] : $dataAll;
    }

    /*
      array(
      'username'=>'imooc',
      'password'=>'imooc',
      'email'=>'imooc@imooc.com',
      'token'=>'123abc',
      'token_exptime'=>'123123',
      'regtime'=>'123456'
      )
      INSERT user(username,password,email,token,token_exptime,regtime)
      VALUES('aa','aa','aa@qq.com','bb','123123','123456')
     */

    /**
     * 添加记录的操作
     * @param array $data
     * @param string $table
     * @return Ambigous <boolean, unknown, number>
     */
    public static function add($data, $table) {
        $keys = array_keys($data);
        array_walk($keys, array('PdoMySQL', 'addSpecialChar'));
        $fieldsStr = join(',', $keys);
        $values = "'" . join("','", array_values($data)) . "'";
        $sql = "INSERT INTO {$table} ({$fieldsStr}) VALUES ({$values})";
        return self::execute($sql);
    }

    /*
      array(
      'username'=>'imooc111',
      'password'=>'imooc222',
      'email'=>'imooc333@imooc.com',
      'token'=>'4444',
      'token_exptime'=>'1234444',
      'regtime'=>'12345678'
      )
      UPDATE user SET username='imooc111',password='imooc222'.... WHERE id<=38 ORDER BY username limit 0,1
     */

    /**
     * 更新记录
     * @param array $data
     * @param string $table
     * @param string $where
     * @param string $order
     * @param string $limit
     * @return Ambigous <boolean, unknown, number>
     */
    public static function update($data, $table, $where = null, $order = null, $limit = 0) {
        $sets = '';
        foreach ($data as $key => $val) {
            $sets.="`".$key . "` ='" . $val . "',";
        }
        //echo $sets;
        $sets = rtrim($sets, ',');
        $sql = "UPDATE {$table} SET {$sets} " . self::parseWhere($where) . self::parseOrder($order) . self::parseLimit($limit);
        return self::execute($sql);
    }

    /**
     * 删除记录的操作
     * @param string $table
     * @param string $where
     * @param string $order
     * @param number $limit
     * @return Ambigous <boolean, unknown, number>
     */
    public static function delete($table, $where = null, $order = null, $limit = 0) {
        $sql = "DELETE FROM {$table} " . self::parseWhere($where) . self::parseOrder($order) . self::parseLimit($limit);
        return self::execute($sql);
    }

    /**
     * 得到最后执行的SQL语句
     * @return boolean|Ambigous <string, string>
     */
    public static function getLastSql() {
        $link = self::$link;
        if (!$link){
            return false;
        }else{
            return self::$queryStr;
        }
    }

    /**
     * 得到上一步插入操作产生AUTO_INCREMENT
     * @return boolean|string
     */
    public static function getLastInsertId() {
        $link = self::$link;
        if (!$link){
            return false;
        }else{
            return self::$lastInsertId;
        }
    }

    /**
     * 得到数据库的版本
     * @return boolean|mixed
     */
    public static function getDbVerion() {
        $link = self::$link;
        if (!$link){
            return false;
        }else{
            return self::$dbVersion;
        }
    }

    /**
     * 得到数据库中数据表
     * @return multitype:mixed 
     */
    public static function showTables() {
        $tables = array();
        if (self::query("SHOW TABLES")) {
            $result = self::getAll();
            foreach ($result as $key => $val) {
                $tables[$key] = current($val);
            }
        }
        return $tables;
    }

    /**
     * 解析Where条件
     * @param unknown $where
     * @return string
     */
    public static function parseWhere($where) {
        $whereStr = '';
        if (is_string($where) && !empty($where)) {
            $whereStr = $where;
        }
        return empty($whereStr) ? '' : ' WHERE ' . $whereStr;
    }

    /**
     * 解析group by
     * @param unknown $group
     * @return string
     */
    public static function parseGroup($group) {
        $groupStr = '';
        if (is_array($group)) {
            $groupStr.=' GROUP BY ' . implode(',', $group);
        } elseif (is_string($group) && !empty($group)) {
            $groupStr.=' GROUP BY ' . $group;
        }
        return empty($groupStr) ? '' : $groupStr;
    }

    /**
     * 对分组结果通过Having子句进行二次删选
     * @param unknown $having
     * @return string
     */
    public static function parseHaving($having) {
        $havingStr = '';
        if (is_string($having) && !empty($having)) {
            $havingStr.=' HAVING ' . $having;
        }
        return $havingStr;
    }

    /**
     * 解析Order by
     * @param unknown $order
     * @return string
     */
    public static function parseOrder($order) {
        $orderStr = '';
        if (is_array($order)) {
            $orderStr.=' ORDER BY ' . join(',', $order);
        } elseif (is_string($order) && !empty($order)) {
            $orderStr.=' ORDER BY ' . $order;
        }
        return $orderStr;
    }

    /**
     * 解析限制显示条数limit
     * limit 3
     * limit 0,3
     * @param unknown $limit
     * @return unknown
     */
    public static function parseLimit($limit) {
        $limitStr = '';
        if (is_array($limit)) {
            if (count($limit) > 1) {
                $limitStr.=' LIMIT ' . $limit[0] . ',' . $limit[1];
            } else {
                $limitStr.=' LIMIT ' . $limit[0];
            }
        } elseif (is_string($limit) && !empty($limit)) {
            $limitStr.=' LIMIT ' . $limit;
        }
        return $limitStr;
    }

    /**
     * 解析字段
     * @param unknown $fields
     * @return string
     */
    public static function parseFields($fields) {
        if (is_array($fields)) {
            array_walk($fields, array('PdoMySQL', 'addSpecialChar'));
            $fieldsStr = implode(',', $fields);
        } elseif (is_string($fields) && !empty($fields)) {
            if (strpos($fields, '`') === false) {
                $fields = explode(',', $fields);
                array_walk($fields, array('PdoMySQL', 'addSpecialChar'));
                $fieldsStr = implode(',', $fields);
            } else {
                $fieldsStr = $fields;
            }
        } else {
            $fieldsStr = '*';
        }
        return $fieldsStr;
    }

    /**
     * 通过反引号引用字段，
     * @param unknown $value
     * @return string
     */
    public static function addSpecialChar(&$value) {
        if ($value === '*' || strpos($value, '.') !== false || strpos($value, '`') !== false) {
            //不用做处理
        } elseif (strpos($value, '`') === false) {
            $value = '`' . trim($value) . '`';
        }
        return $value;
    }

    /**
     * 执行增删改操作，返回受影响的记录的条数
     * @param string $sql
     * @return boolean|unknown
     */
    public static function execute($sql = null) {
        $link = self::$link;
        if (!$link) {
            return false;
        } else {
            self::$queryStr = $sql;
        }

        if (!empty(self::$PDOStatement)) {
            self::free();
            $result = $link->exec(self::$queryStr);
        } else {
            $result = $link->exec(self::$queryStr);
            self::haveErrorThrowException();
        }

        if ($result) {
            self::$lastInsertId = $link->lastInsertId();
            self::$numRows = $result;
            return self::$numRows;
        } else {
            return false;
        }
    }

    /**
      释放结果集
     */
    public static function free() {
        self::$PDOStatement = null;
    }

    public static function query($sql = '') {
        $link = self::$link;
        if (!$link)
            return false;
        //判断之前是否有结果集，如果有的话，释放结果集
        if (!empty(self::$PDOStatement))
            self::free();
        self::$queryStr = $sql;
        self::$PDOStatement = $link->prepare(self::$queryStr);
        $res = self::$PDOStatement->execute();
        self::haveErrorThrowException();
        return $res;
    }

    public static function haveErrorThrowException() {
        $obj = empty(self::$PDOStatement) ? self::$link : self::$PDOStatement;
        $arrError = $obj->errorInfo();
        //print_r($arrError);
        if ($arrError[0] != '00000') {
            self::$error = 'SQLSTATE: ' . $arrError[0] . ' <br/>SQL Error: ' . $arrError[2] . '<br/>Error SQL:' . self::$queryStr;
            self::throw_exception(self::$error);
            return false;
        }
        if (self::$queryStr == '') {
            self::throw_exception('没有执行SQL语句');
            return false;
        }
    }

    /**
     * 自定义错误处理
     * @param unknown $errMsg
     */
    public static function throw_exception($errMsg) {
        echo '<div style="width:80%;background-color:#ABCDEF;color:black;font-size:20px;padding:20px 0px;">' . $errMsg . '</div>';
    }

    /**
     * 销毁连接对象，关闭数据库
     */
    public static function close() {
        self::$link = null;
    }

}