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What modern AI systems do
Tell which part of an AI system does each job.
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What modern AI systems do
Tell which part of an AI system does each job.
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Source-based teaching example · Fictional data · Reviewed 2026-10-03. Microsoft Mark · locally synthesized. On a small screen, use fullscreen for diagram details or read the transcript.
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0:00 · What you will learn
Tell which part of an AI system does each job.
What appears on screen
Tell which part of an AI system does each job.
0:05 · The idea
The model writes the answer. The app is the service you use. Other software gives the model information and controls its tools.
What appears on screen
The model writes the answer. The app is the service you use. Other software gives the model information and controls its tools.
0:17 · One useful term
Harness. The software that connects a model to instructions, information and tools. Its surrounding controls must enforce permissions.
What appears on screen
The software that connects a model to instructions, information and tools. Its surrounding controls must enforce permissions.
0:30 · A worked example · 1
Imagine asking a travel assistant if it will rain tomorrow. A weather tool supplies a current forecast. The model turns that forecast into an answer.
What appears on screen
Imagine asking a travel assistant if it will rain tomorrow. A weather tool supplies a current forecast. The model turns that forecast into an answer.
0:42 · A worked example · 2
Writing about rain is different from checking the forecast.
What appears on screen
Writing about rain is different from checking the forecast.
0:49 · Your turn to think
Without a weather source, does a confident answer prove tomorrow’s weather? Pause and decide before continuing.
What appears on screen
Without a weather source, does a confident answer prove tomorrow’s weather? Pause the video if you need more time.
1:06 · Why this answer works
No. The assistant needs current weather evidence. If that evidence is missing, it should say the answer is unknown.
What appears on screen
No. The assistant needs current weather evidence. If that evidence is missing, it should say the answer is unknown.
1:17 · Check 1
Find the source of current facts.
What appears on screen
Find the source of current facts.
1:22 · Check 2
Check which tools can act.
What appears on screen
Check which tools can act.
1:27 · Check 3
Keep unknown facts marked as unknown.
What appears on screen
Keep unknown facts marked as unknown.
1:32 · Now try a different case
Open the lesson and try its different practice case. Use every check in the full task. Watching alone does not mark the lesson complete.
What appears on screen
Open the lesson Try the new case Check and revise The full task and its requirements are in the linked lesson.
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