Rather, they said, the differences probably resulted from several related trends.

Resource usage is different from the trend of the time.

"It's really helped them cross over from human trends to animal products," he added.

But, arguably, it is only 12 months since they benefited from exactly the same trend.

This is a significant difference from the present trend.

That is a sharp reversal from the trend earlier this year.

But he said it appeared clear from current trends that not all would be replaced by full-time teachers.

This school with its traditions is completely isolated from the politics or trends of the outside world.

"I would argue that it certainly benefits from favorable trends in technology," he said.

A point on this line indicates at that year, there is no deviation from the trend.