Based on the context, let’s talk about the “talkers” and “sleepers” in the article.

The journey is difficult and dangerous. As history progresses, there will inevitably be setbacks, detours, retreats, and failures. Naturally, there are inevitably those who talk, those who sleep soundly, those who shake their heads, those who sigh, those who hesitate, and those who cry. But they are not the backbone of history. They are as powerless as spider threads and cannot stop the pace of history.

If analyzed in context, none of these people have truly participated in practical activities that promote the progress of human society, but they cannot stop the development of history. Talkers should refer to scholars who are not practical and can only talk empty talk, while sleepers should refer to those numb common people.