--- a/videos/01-intro.srt	Sat Sep 04 13:29:36 2021 +0100
+++ b/videos/01-intro.srt	Sat Sep 04 14:08:00 2021 +0100
@@ -52,7 +52,7 @@
 12
 00:00:46,130 --> 00:00:49,310
 do not need to be an
-Über hacker to implement your own
+Überhacker to implement your own
 
 13
 00:00:49,310 --> 00:00:51,305
@@ -510,11 +510,11 @@
 110
 00:05:41,560 --> 00:05:45,935
 Even though we cut corners
-into could generate apart.
+in the code generater part
 
 111
 00:05:45,935 --> 00:05:48,575
-By producing code for the JVM,
+by producing code for the JVM,
 
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 00:05:48,575 --> 00:05:51,710
@@ -835,11 +835,11 @@
 180
 00:08:52,190 --> 00:08:56,690
 Why on Earth studying
-compilers in 2020? And even worse
+compilers in 2020 (and of course in 2021)? 
 
 181
 00:08:56,690 --> 00:08:59,659
-why implementing
+And even worse: Why implementing
 your own compiler?
 
 182
@@ -890,7 +890,7 @@
 
 192
 00:09:29,690 --> 00:09:32,585
-wierder, rather than
+weirder, rather than
 getting clocked faster.
 
 193
@@ -950,7 +950,7 @@
 205
 00:10:07,189 --> 00:10:11,930
 We have TSPs, GPUs, ARM
-big,little, Xeon Phis,
+big,little, Xeon Phi,
 
 206
 00:10:11,930 --> 00:10:14,630
@@ -1245,7 +1245,7 @@
 
 268
 00:13:15,770 --> 00:13:18,650
-bat is very well-known in
+but is very well-known in
 
 269
 00:13:18,650 --> 00:13:22,040
@@ -1368,7 +1368,7 @@
 295
 00:14:26,420 --> 00:14:30,195
 their airplanes up in the
-air and let them not crush.
+air and let them not crash.
 
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 00:14:30,195 --> 00:14:33,010
@@ -1485,11 +1485,11 @@
 321
 00:15:40,280 --> 00:15:43,670
 This BF language contains
-the kind of memory and
+a kind of memory and
 
 322
 00:15:43,670 --> 00:15:45,680
-the memory pointer which can
+a memory pointer which can
 
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 00:15:45,680 --> 00:15:48,140
@@ -1558,7 +1558,7 @@
 337
 00:16:22,865 --> 00:16:27,120
 And I run it with a
-benchmark program, which
+benchmark program, which you 
 
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 00:16:27,760 --> 00:16:30,960
@@ -1615,11 +1615,11 @@
 
 350
 00:17:06,520 --> 00:17:09,490
-representing the BF memory in
+representing the BF memory in C.
 
 351
 00:17:09,490 --> 00:17:12,310
-C. We can do this
+We can do this
 by just an array of
 
 352
@@ -1819,11 +1819,11 @@
 395
 00:19:31,810 --> 00:19:38,395
 Keep this in mind.
-As a second try,
+
 
 396
 00:19:38,395 --> 00:19:42,595
-of course, I can try to now
+As a second try, of course, I can try to 
 generate a better C program.
 
 397
@@ -1935,7 +1935,7 @@
 
 421
 00:20:51,530 --> 00:20:54,050
-So there's minus O0.
+So it runs with minus O0.
 
 422
 00:20:54,050 --> 00:20:56,090
@@ -1984,8 +1984,8 @@
 
 432
 00:21:31,700 --> 00:21:35,255
-any optimizations and run
-essentially 20 seconds.
+any optimizations and it runs
+essentially for 20 seconds.
 
 433
 00:21:35,255 --> 00:21:37,880
@@ -2016,11 +2016,11 @@
 439
 00:21:55,430 --> 00:21:58,070
 increments everything
-in a single steps
+in single steps
 
 440
 00:21:58,070 --> 00:22:00,185
-or decremented in single steps.
+or decrements in single steps.
 
 441
 00:22:00,185 --> 00:22:04,835
@@ -2147,7 +2147,7 @@
 
 468
 00:23:25,700 --> 00:23:28,160
-I first run the program with
+I first run the Mandelbrot program with
 
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 00:23:28,160 --> 00:23:31,730