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HIST 180A · Lec 1

Topics in History of Science: Deepest Order of Universe: Mathematics and Culture from Pythagoras to Artificial Intelligence

Fall 2026Alexander, A.4 units

Seats, time, final and grades

Seats

Open, 85 seats left.

35 of 120 enrolled.

Meets

TR 2:00pm-3:15pm

Every meeting the registrar lists for this section.

Final

Mon 7 Dec, 8:00am to 11:00am

One exam for the whole class, Los Angeles time.

Read 35 hours ago.

Grades

3.60
predicted, this instructor · 231 grades

231 letter grades, Alexander, A..

Read 89 minutes ago. This is a recent reading, not a live seat count.

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Before you can enroll

From the registrar limited early, then open

History 97A through 188 are limited to History pre-majors, majors, and minors on the priority and first enrollment passes. Any student may enroll on second pass, space permitting. Nonmajors may enroll in History 97 and upper-division history courses (except those in the 191 series) on the second pass. History 191 seminars are limited to declared junior/senior History majors, who may enroll on the second pass. After July 2, 2026, some lower-division and upper-division seats are limited to students attending New Student Orientation sessions. All limitations are removed September 15, 2026. Seats are held for entering students who enroll through New Student Orientation sessions beginning July 2, 2026. New student restrictions will be lifted on September 15, 2026 at 8 a.m.

The limit applies to the earlier enrollment pass. dibs still counts this class as one you can take, because it opens up, but on first pass it may not be yours yet.

When it meets

Mon
Tue
Wed
Thu
Fri
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm

Meets: TR 2:00pm-3:15pm

Haines Hall 220

Grades

3.60
predicted, this instructor · 231 grades
A range
71%
P/NP
2%
D/F/W
1.7%

Full grade history for HIST 180A

What students say

dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

Workload, average. 3.3 of 5 for Amir Alexander, where 5 is lightest. Read 29 days ago.

dibs has not read this course’s reviews, so it cannot say what kind of work it sets. That is dibs not having looked. It is not a course without papers or exams, and the reviews linked below are the answer until dibs catches up.

HIST 180A reviews for Amir Alexander Reviews for all professors of HIST 180A

Will it still be here

low risk chance of closing before your enrollment pass.

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 8624S
  • 8525S
  • 6525F
Enrollment by term: 24S 86, 25S 85, 25F 65

Peak 86 · most recent 25F at 65

Seats over time

Filled by 10 over about 1 month

35 of 120 · 85 left
18 Aug 20:409 Sep 20:461 Oct 20:52
dibs read 168 of the 551 hours its hourly record covers, 30%, and did not look in 383. dibs had no hourly record before 8 Sep, which is the other 506 of 1057 plotted.35 of 120 enrolled at the newest reading, 89 minutes ago, with 85 left. Seats from 18 Aug 20:40 to 1 Oct 20:52, 25 to 35. dibs read 168 of the 551 hours its hourly record here covers, 30%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 383 hours dibs was keeping a record and did not reach this section. Nothing before 8 September at 22:00, where this section's record starts, has a read either way, which is 506 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

A dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not: 89 minutes ago.

Show the readings (56)
Recorded Enrolled Capacity Status Waitlist Hours read
1 Oct 20:52 35 120 open - 3 of 8
1 Oct 13:52 35 120 open - 6 of 17
30 Sep 21:42 34 120 open - 6 of 18
30 Sep 04:12 32 120 open - 2 of 6
29 Sep 23:42 35 120 open - 2 of 4
29 Sep 20:12 32 120 open - 8 of 26
28 Sep 19:42 35 120 open - 6 of 18
28 Sep 02:12 33 120 open - 16 of 53
25 Sep 22:02 31 120 open - 2 of 5
25 Sep 18:32 32 120 open - 2 of 4
25 Sep 15:22 31 120 open - 4 of 12
25 Sep 04:52 32 120 open - 5 of 15
24 Sep 14:42 31 120 open - 4 of 11
24 Sep 04:32 30 120 open - 2 of 6
23 Sep 23:42 27 120 open - 2 of 4
23 Sep 20:12 29 120 open - 9 of 29
22 Sep 16:12 27 120 open - 2 of 5
22 Sep 12:12 28 120 open - 2 of 4
22 Sep 09:42 27 120 open - 5 of 14
21 Sep 20:32 28 120 open - 21 of 68
19 Sep 01:42 26 120 open - 11 of 35
17 Sep 15:52 27 120 open - 3 of 8
17 Sep 08:52 26 120 open - 2 of 4
17 Sep 05:22 25 120 open - 2 of 6
17 Sep 00:52 24 120 open - 2 of 4
16 Sep 21:22 25 120 open - 11 of 35
15 Sep 11:12 24 120 open - 3 of 8
15 Sep 04:32 26 120 open - 52 of 196, 45 no hourly record
7 Sep 01:40 27 120 open - no hourly record
3 Sep 01:40 28 120 open - no hourly record
2 Sep 22:40 27 120 open - no hourly record
2 Sep 18:40 27 111 open - no hourly record
2 Sep 15:40 27 120 open - no hourly record
2 Sep 13:40 27 111 open - no hourly record
2 Sep 11:40 27 120 open - no hourly record
2 Sep 10:40 27 111 open - no hourly record
2 Sep 09:40 27 120 open - no hourly record
1 Sep 01:40 27 111 open - no hourly record
31 Aug 23:40 27 102 open - no hourly record
31 Aug 22:40 27 111 open - no hourly record
31 Aug 21:40 27 102 open - no hourly record
31 Aug 19:40 27 111 open - no hourly record
31 Aug 16:40 27 102 open - no hourly record
31 Aug 15:40 27 111 open - no hourly record
31 Aug 13:40 27 102 open - no hourly record
31 Aug 12:40 27 111 open - no hourly record
28 Aug 00:40 27 102 open - no hourly record
27 Aug 22:40 26 102 open - no hourly record
27 Aug 21:40 27 102 open - no hourly record
27 Aug 20:40 26 102 open - no hourly record
27 Aug 19:40 27 102 open - no hourly record
27 Aug 11:28 26 102 open - no hourly record
24 Aug 21:40 26 93 open - no hourly record
21 Aug 13:40 24 93 open - no hourly record
20 Aug 17:40 24 84 open - no hourly record
18 Aug 20:40 25 84 open - -
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.

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