I have a quick question: What is the difference between:

```
    $this->data['page_detail'] = $this->page_model->find_ID();

```

and

```
    data['page_detail'] = $this->page_model->find_ID();

```

?

To add more detail:

```
if ($this->uri->segment(1)=='profile')
        {
            if ( ! $this->data['page_detail'] = $this->page_model->find_alias($this->uri->segment(1)))
                redirect();

```

Why not?

```
if ($this->uri->segment(1)=='profile')
        {
            if ( data['page_detail'] = $this->page_model->find_alias($this->uri->segment(1)))
                redirect();

```